function show(addr) {
 x=window.open(addr,"","dependable=yes,toolbar=no,menubar=no,status=no,directories=no,width=640,height=480,resizable=yes,scrollbars=yes,screenx=10,left=10,screeny=10,top=10");
 x.focus();
 return true; //must return false for the caller to not process the event as well
}