function popUp(URL, Params) {
   Id=(new Date()).getTime();
   eval("page"+Id+"=window.open(URL, '"+Id+"', 'toolbar=0, scrollbars=1, location=0, statusbar=0, menubar=0, resizable=1, "+Params+"');");
}

function popUpWH(URL, Width, Height) {
   popUp(URL, "width="+Width+", height="+Height);
}

function popUpTopRight(URL, Width, Height) {
   popUp(URL, "width="+(Width+20)+", height="+(Height+20)+", left="+(screen.width-(Width+20))+", top=0");
}