Markup Validation Service
Check the markup (HTML, XHTML, …) of Web documents
Markup Validation Service
Check the markup (HTML, XHTML, …) of Web documents
Line 19,
Column 12:
there is no attribute "REL"
<LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="t…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 19,
Column 12:
an attribute value specification must be an attribute value literal unless SHORTTAG YES is specified
<LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="t… <LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="t…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 19,
Column 78:
there is no attribute "TYPE"
…REF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="text/css" MEDIA=screen> You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 19,
Column 95:
there is no attribute "MEDIA"
…REF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="text/css" MEDIA=screen> You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 19,
Column 95:
an attribute value specification must be an attribute value literal unless SHORTTAG YES is specified
…REF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="text/css" MEDIA=screen> …REF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="text/css" MEDIA=screen> You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:
Line 20,
Column 15:
an attribute value specification must be an attribute value literal unless SHORTTAG YES is specified
<LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/print.css" TYPE="……et HREF="http://meduc.fc.ul.pt/theme/ie/print.css" TYPE="text/css" MEDIA=print>…et HREF="http://meduc.fc.ul.pt/theme/ie/print.css" TYPE="text/css" MEDIA=print>You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:
Line 110,
Column 18:
there is no attribute "language"
<script language="JavaScript">You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 110,
Column 30:
required attribute "type" not specified
<script language="JavaScript">The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 111,
Column 74:
character "&" is the first character of a delimiter but occurred as data
function correctPNG() // correctly handle PNG transparency in Win IE 5.5 & 6.This message may appear in several cases:
Line 115,
Column 25:
character "&" is the first character of a delimiter but occurred as data
if ((version >= 5.5) && (document.body.filters)) This message may appear in several cases:
Line 115,
Column 26:
character "&" is the first character of a delimiter but occurred as data
if ((version >= 5.5) && (document.body.filters)) This message may appear in several cases:
Line 117,
Column 44:
character ";" not allowed in attribute specification list
for(var i=0; i<document.images.length; i++) for(var i=0; i<document.images.length; i++)You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:
Line 130,
Column 37:
an attribute specification must start with a name or name token
var strNewHTML = "<span " + imgID + imgClass + imgTitleAn attribute name (and some attribute values) must start with one of a restricted set of characters. This error usually indicates that you have failed to add a closing quotation mark on a previous attribute value (so the attribute value looks like the start of a new attribute) or have used an attribute that is not defined (usually a typo in a common attribute name).
Line 141,
Column 9:
end tag for "document.images.length" omitted, but OMITTAG NO was specified
</script>You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
Line 117,
Column 21:
start tag was here
for(var i=0; i<document.images.length; i++)</head>You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
Line 20,
Column 5:
start tag was here
<LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/print.css" TYPE="…</head>You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
Line 19,
Column 2:
start tag was here
<LINK REL=StyleSheet HREF="http://meduc.fc.ul.pt/theme/ie/menubar.css" TYPE="t… <table width="914px" height="96" border="0" cellpadding="0" cellspacing="…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 159,
Column 61:
there is no attribute "target"
…><a href="http://www.ie.ul.pt" target="_blank"><img src="http://meduc.fc.ul.pt…You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 159,
Column 291:
there is no attribute "align"
…edil;ão da Universidade de Lisboa" height="60" align="left" /></a></td>You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 170,
Column 35:
there is no attribute "style"
</script></div></form><font style="font-size:16px;">You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 170,
Column 52:
element "font" undefined
</script></div></form><font style="font-size:16px;">You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:
Line 171,
Column 24:
there is no attribute "LANGUAGE"
<SCRIPT LANGUAGE="Javascript"><!--You have used the attribute named above in your document, but the document type you are using does not support that attribute for this element. This error is often caused by incorrect use of the "Strict" document type with a document that uses frames (e.g. you must use the "Transitional" document type to get the "target" attribute), or by using vendor proprietary extensions such as "marginheight" (this is usually fixed by using CSS to achieve the desired effect instead).
This error may also result if the element itself is not supported in the document type you are using, as an undefined element will have no supported attributes; in this case, see the element-undefined error message for further information.
How to fix: check the spelling and case of the element and attribute, (Remember XHTML is all lower-case) and/or check that they are both allowed in the chosen document type, and/or use CSS instead of this attribute. If you received this error when using the <embed> element to incorporate flash media in a Web page, see the FAQ item on valid flash.
Line 171,
Column 36:
element "SCRIPT" undefined
<SCRIPT LANGUAGE="Javascript"><!--You have used the element named above in your document, but the document type you are using does not define an element of that name. This error is often caused by:
Line 206,
Column 82:
required attribute "alt" not specified
…g src="http://meduc.fc.ul.pt/theme/ie/images/blank.gif" width="2" height="1" />The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 214,
Column 20:
an attribute value specification must be an attribute value literal unless SHORTTAG YES is specified
<table cellpadding=0 cellspacing=0 style="width:960px; "><tr><table cellpadding=0 cellspacing=0 style="width:960px; "><tr><li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 221,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=33"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 223,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 224,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=56"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 226,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 227,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=63"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 228,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 229,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=20"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 231,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 232,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=1">…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 234,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 235,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/category.php?id=52"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 236,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 237,
Column 5:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/view.php?id=225">Es…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 238,
Column 8:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><span class="qmdivider qmdividery" ></span></li>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 239,
Column 8:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li><a class="qmparent" href="http://meduc.fc.ul.pt/course/view.php?id=643"…The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 240,
Column 20:
document type does not allow element "li" here; missing one of "ul", "ol" start-tag
<li class="qmclear"> </li></ul>The mentioned element is not allowed to appear in the context in which you've placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you've forgotten to close a previous element.
One possible cause for this message is that you have attempted to put a block-level element (such as "<p>" or "<table>") inside an inline element (such as "<a>", "<span>", or "<font>").
Line 240,
Column 36:
end tag for "li" omitted, but OMITTAG NO was specified
<li class="qmclear"> </li></ul>You may have neglected to close an element, or perhaps you meant to "self-close" an element, that is, ending it with "/>" instead of ">".
Line 219,
Column 1:
start tag was here
<li><a href="http://meduc.fc.ul.pt/">Home</a> <img src="http://meduc.fc.ul.pt/theme/ie/FrontSlideshow/images/wl_001.jpg" />The attribute given above is required for an element that you've used, but you have omitted it. For instance, in most HTML and XHTML document types the "type" attribute is required on the "script" element and the "alt" attribute is required for the "img" element.
Typical values for type are
type="text/css" for <style>
and type="text/javascript" for <script>.
Line 414,
Column 5:
invalid comment declaration: found character "<" outside comment but inside comment declaration
<!--<script type="text/javascript" src="http://meduc.fc.ul.pt/lib/editor/tinymc…Check that you are using a proper syntax for your comments, e.g: <!-- comment here -->. This error may appear if you forget the last "--" to close one comment, and later open another.
Line 413,
Column 1:
comment declaration started here
<!--<!--<script type="text/javascript" src="http://meduc.fc.ul.pt/lib/editor/tinymc…You have used character data somewhere it is not permitted to appear. Mistakes that can cause this error include:
Line 414,
Column 109:
end tag for element "script" which is not open
…ipt" src="http://meduc.fc.ul.pt/lib/editor/tinymce3/tiny_mce_gzip.js"></script>The Validator found an end tag for the above element, but that element is not currently open. This is often caused by a leftover end tag from an element that was removed during editing, or by an implicitly closed element (if you have an error related to an element being used where it is not allowed, this is almost certainly the case). In the latter case this error will disappear as soon as you fix the original problem.
If this error occurred in a script section of your document, you should probably read this FAQ entry.
Line 458,
Column 1:
character data is not allowed here
-->You have used character data somewhere it is not permitted to appear. Mistakes that can cause this error include:
Below is the source input I used for this validation:
