function window.onbeforeprint() {
	var coll = document.all.tags("DIV");
	if (coll!=null) {
      	for (i=0; i<coll.length; i++) 
	  		if (coll[i].className == "HideOnPrint") {  
		   		coll[i].style.display = "none";
		    } else if (coll[i].className == "ShowOnPrint") {
				coll[i].style.display = "";
			}
   	}
}

function window.onafterprint() {
	var coll = document.all.tags("DIV");
   	if (coll!=null) {
    	for (i=0; i < coll.length; i++) 
	    	if (coll[i].className == "HideOnPrint") {  
		   		coll[i].style.display = "";
		    } else if (coll[i].className == "ShowOnPrint") {
				coll[i].style.display = "none";
			}
	}
}