body
{
	margin:0;
	padding:0;
}
#wrapper
{
	margin:0 auto;
	width:960px;
}
div.row
{
	clear:both;
}
div.column
{
	float:left;
}
div.narrow
{
	width:160px;
}
div.medium
{
	width:600px;
}
div.wide
{
	width:765px;
}
div.mt
{
	margin-top:20px;
}
div.mr
{
	margin-right:20px;
}
div.mb
{
	margin-bottom:20px;
}
div.ml
{
	margin-left:20px;
}