function popNew(a,n,h,w)    {
if((typeof(popWin) != "undefined")){
    popWin.close();
    }
popWin = window.open(a,n,'directories=0,height=' + h + ',width=' + w +
',location=0,menubar=0,resizable=0,scrollbars=0,status=0,toolbar=0');
return false;
}