//document.domain = "baunetz.de"
function swap(id) {
//		var id = CONTENT.idtag;	
/*		if (id == 0) {
		  		advert="04"; //vorwerk
			}
		if (id == 1) {
				advert="02"; //bausystem
			}
		if (id > 1) {
		  		advert="05";//trocal
			}*/
		  
		  advert = "http://www.BauNetz.de/werbung/fuss" + id.toString() + ".htm";
		  //check if nav3 or ie4 and higher, in this case location.replace 
		  //is used back button will not be override
		  if ((is.nav3)||(is.nav4up)||(is.ie4up)) {
				top.WERBUNG.location.replace(advert);
			}
			//else location.href is used
			else {
				top.WERBUNG.location.href=(advert);
			}
		}