div.float_left
{
	float: left;
}
div.float_right
{
	float: right;
}
div.clear_both
{
	clear: both;
	font-size: 0px;
}
div#container
{
	width: 762px;
}
div#header
{
	width: 760px;
}
div#left_column
{
	width: 160px;
	float: left;
}
div#center_column
{
	width: 600px;
	float: left;
}
div#footer
{
	width: 760px;
}