html,
body {
	margin:0;
	padding:0;
	height:100%;
	text-align: center;
}
#container {
	min-height:100%;
	position:relative;
	margin-right: auto;
	margin-left: auto;
	width: 930px;
}
#header {
 
   padding:10px;
}
#mainContent {
	padding:10px;
	padding-bottom:40px;   /* Height of the footer */
	font-size: 16px;
}
#footer {
   position:absolute;
   bottom:0;
   width:100%;
   height:30px;   /* Height of the footer */

}