function doPopUp(sURL,iWidth, iHeight) {
        var iLeft = ((screen.width/2)-(iWidth/2));
        var iTop = ((screen.height/2)-(iHeight/2));
        newWindow = window.open(sURL,'newWindow','toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width='+iWidth+',height='+iHeight+',left=' + iLeft +',top=' + iTop);
        newWindow.focus();
    }