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XHTML Tags
<!-->
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<colgroup>
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<h1> - <h6>
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Standard
Attributes
Events

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The <colgroup> tag

Definition and Usage

Defines groups of table columns. With this element, you can group columns for formatting. This element is only valid inside the <table> tag. 

Tips and Notes

Note: The colgroup element is an empty element that contains attributes only. To create columns, you must specify td elements within a tr element.

Example

XHTML Output
This example creates a table with four columns, with the first three columns in one colgroup, and the last column in the second colgroup:
<table border="1">
<colgroup span="3" style="color:#FF0000;">
</colgroup>
<tr>
<td>1</td>
<td>2</td>
<td>3</td>
<td>4</td>
</tr>
</table>
1 2 3 4

Optional Attributes

DTD indicates in which XHTML 1.0 DTD the attribute is allowed. S=Strict, T=Transitional, and F=Frameset.

Attribute Value Description DTD
align right
left
center
justify
char		 Defines the horizontal alignment of the contents in the column group STF
char character Defines a character to use to align text on (use with align="char") STF
charoff pixels
%		 Defines an alignment offset to the first character to align on, as set with char STF
span number Defines the number of columns the <colgroup> should span STF
valign top
middle
bottom
baseline		 Defines the vertical alignment of the contents in the column group STF
width %
pixels
relative_length		 Defines the width of the column group.

Note: The width attribute can be overridden by settings in <col>!

 STF

Standard Attributes

id, class, title, style, dir, lang, xml:lang

For a full description, go to Standard Attributes.

Event Attributes

onclick, ondblclick, onmousedown, onmouseup, onmouseover, onmousemove, onmouseout, onkeypress, onkeydown, onkeyup

For a full description, go to Event Attributes.

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