COLGROUP
This table provides specifics for a group of columns in a table. For example:
<TABLE> <COLGROUP VALIGN="TOP"> <COL ALIGN="RIGHT"> <COL ALIGN="CENTER"> <TR> <TD>This cell is aligned top and right</TD> <TD>This cell is aligned top and center</TD> </TR> </TABLE>
COLGROUP Attributes:
ALIGN="LEFT, RIGHT, CENTER, JUSTIFY, or CHAR"
The ALIGN attribute is used to define how text within the table columns will line up with the edges of the table cells. ALIGN="LEFT" will position the text flush with the left side of the cell. ALIGN="RIGHT" will position the text to the right side of the cell, ALIGN="CENTER" will position the item equidistant from the left and right sides of the cell, and ALIGN="CHAR" will line the decimal places of numbers within the column of cells.
CHAR=" ... "
This attribute is used to define the character upon which the contents of the cell will align.
CHAROFF="n"
This attribute is used to specify the number of characters, measured from the left, upon which the characters of the other cells will align upon.
ID=" ... "
The ID attribute is used to assign a unique ID selector (identification) to the tag in which it is invoked. A style may be assigned to that ID, which will effect only that one instance of the attribute.
SPAN="n"
This attribute is used to specify the number of columns which will exist within the table.
STYLE=" ... "
Used to specify which style sheet commands to apply to the instance of the STYLE attribute invoked within the tag.
TITLE=" ... "
The TITLE attribute is used to display a note or information in a popup window pertaining to the object to which it was assigned. The popup window is invoked by holding the mouse pointer over the object.
WIDTH="n"
This attribute diefines the width of the column, and is measured in pixels or a percentage of available space.
VALIGN="TOP, BOTTOM, BASELINE, or MIDDLE"
This attribute defines the vertical positioning of the column.
This tag also accepts the following Event Handlers:

onClick
onDblClick
onMouseDown
onMouseUp
onMouseOver
onMouseMove
onMouseOut
onKeyPress
onKeyDown
onKeyUp