function pop(url, width, height, scroll) {
var pURL=url;
pInfo='toolbar=0,';
pInfo='top=300,';
pInfo='left=350,';
pInfo+='location=0,';
pInfo+='directories=0,';
pInfo+='status=0,';
pInfo+='menubar=0,';
pInfo+='scrollbars=' + scroll + ',';
pInfo+='resizable=0,';
pInfo+='width=' + width + ',';
pInfo+='height=' + height;
window.open(pURL, '', pInfo);
}