CSAg = window.navigator.userAgent;
CSBVers = parseInt(CSAg.charAt(CSAg.indexOf("/")+1),10);
function CSFindElement(n,ly) { if (CSBVers < 4) return document[n];
	var curDoc = ly ? ly.document : document; var elem = curDoc[n];
	if (!elem) { for (var i=0;i<curDoc.layers.length;i++) {
		elem = CSFindElement(n,curDoc.layers[i]); if (elem) return elem; }}
	return elem;
}
function charge_URL(formName,popupName,target) {
var form  = CSFindElement(formName);
var popup = form.elements[popupName];
var url=popup.options[popup.selectedIndex].value;
if (url!="x") {window.open(url, target);}
popup.selectedIndex = 0;
}