#page #content_window #primary_content {
	margin-top: 0px;
	overflow: hidden; 
	_overflow: hidden; 
	height:100%;
}
#page #content_window #primary_content[id] {
	display:table;
	position:static;
}

#page #content_window #primary_content #content{
	margin-top:0px;
	position:absolute;
	top:50%;
}
#page #content_window #primary_content #content[id]{
	display:table-cell;
	position:static;
	vertical-align:middle
}
#page #content_window #primary_content #content #middle{
	_height:100%;
	position:relative;
	top:-50%;
}