html,body {
	padding: 0;
	margin: 0;
	height: 100%;
}

#main {margin:0 auto; width:780px; position:relative;}
* html #main {height:100%;}

#header {height:403px}

.col_1, .col_2, .col_3{ float:left;}

#footer { clear:both; position:relative; margin:0 auto; width:780px; padding-bottom:25px;}
* html #footer {}