function popUpBanner(urlTarget, windowTarget, widowTitle,windowProperties)
{
	var remote = null;
	remote = window.open('', widowTitle, windowProperties);
	if (remote != null) {
		if (remote.opener == null) remote.opener = windowTarget;
			remote.location.href = urlTarget;
		}
	}

	var ns4 = (document.layers); 
	var ie4 = (document.all && !document.getElementById); 
	var ie5 = (document.all && document.getElementById); 
	var ns6 = (!document.all && document.getElementById); 

function attach(id) { 
	var obj 
	if(ns4) obj = document.layers[id]; 
	else if(ie4) obj = document.all[id]; 
	else if(ie5 || ns6) obj = document.getElementById(id); 
		return obj 
	} 

function expandBanner(parentId, childId){
	parentlayer = attach(parentId); 
	childlayer = attach(childId); 
	parentlayer.style.visibility = "hidden"; 
	childlayer.style.visibility = "visible";
}

function collapseBanner(parentId, childId){
	parentlayer = attach(parentId); 
	childlayer = attach(childId); 
	parentlayer.style.visibility = "visible"; 
	childlayer.style.visibility = "hidden"; 
}