var alleLinks = new Array(); 

if (document.getElementById) { 
	alleLinks = document.getElementsByTagName("a"); 
	for(z=0; z<alleLinks.length; z++) { 
		if(alleLinks[z].className == "popupWindow") {
			alleLinks[z].onclick = function() { 
				document.getElementById("page_margins").className = "doNotPrint"; 
				displayMessage(this.href, 700, 670, "modalDialogOfferDetails"); 
				return false;
			}
		}
	}
}