function openMicrosite(_site) {
	var _top 	= '50px';
	var _left 	= '50px';
	var _width 	= '720px';
	var _height = '477px';
	var _url = "http://www.malteser-koeln.de/microsites/"+_site;
	
	window.open( _url,'','width='+_width+'px,height='+_height+'px,menubar=no,location=no,resizable=no,scrollbars=no,status=yes,left='+_left+'top='+_top);
}