function Zoom1(URL) {

        var externalWin = null;

        externalWin = window.open(URL,'Zoom1','toolbar=no,location=no,status=no,scrollbars=no,resizable=no,copyhistory=no,topmargin=0,leftmargin=0,width=620,height=480,top=50,left=50');
}
function Zoom2(URL) {

        var externalWin = null;

        externalWin = window.open(URL,'Zoom2','toolbar=no,location=no,status=no,scrollbars=no,resizable=No,copyhistory=no,topmargin=0,leftmargin=0,width=470,height=630,top=50,left=50');
}
function Zoom3(URL) {

        var externalWin = null;

        externalWin = window.open(URL,'Zoom3','toolbar=no,location=yes,status=no,scrollbars=yes,resizable=no,copyhistory=no,topmargin=0,leftmargin=0,width=780,height=350,top=50,left=50');
}
function openExternaWin(URL) {

        var externalWin = null;

        externalWin = window.open(URL,'Zoom1','toolbar=no,location=no,status=no,scrollbars=no,resizable=no,copyhistory=no,topmargin=0,leftmargin=0,width=480,height=560,top=50,left=50');
}