function PopupWin(page,AddCmd,RefID,Wid,Hei,ScrollBars) {
var w = 480, h = 340;
if (document.all || document.layers) {
   w = screen.availWidth;
   h = screen.availHeight;
}
var popW = Wid, popH = Hei;
var leftPos = (w-popW)/2, topPos = (h-popH)/2;

    popupWindow=open(page +'?'+AddCmd+'ID=' + RefID + '','PopupWin','resizable=no,scrollbars='+ScrollBars+',statusbar=no,width='+Wid+',height='+Hei+',top=' + topPos + ',left=' + leftPos);
    if (popupWindow.opener == null) popupWindow.opener = self;
}