function popUp(URL) {
day = new Date();
id = day.getTime();
eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=750,height=600,left = 550,top = 350');");
}
<!--StartFragment -->
function Pres(fileName) {
     myFloater = window.open('','myWindow','toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,status=1,width=700,height=390')
     myFloater.location.href = fileName;
}