Sticky CSS Footer

Sample HTML...
<div id="wrap">
	<div id="header"></div>
	<div id="main"></div>
</div>
<div id="footer"></div>
 
...and the CSS
html, body {height: 100%;}
 
#wrap {min-height: 100%;}
 
#main {overflow:auto;
	padding-bottom: 150px;}  /* must be same height as the footer */
 
#footer {position: relative;
	margin-top: -150px; /* negative value of footer height */
	height: 150px;
	clear:both;} 
 
/*Opera Fix*/
body:before {
	content:"";
	height:100%;
	float:left;
	width:0;
	margin-top:-32767px;/
}