function OpenWindow(id,name,width,height) {
        var Left = (screen.width  - width) / 2 ;
        var Top  = (screen.height - height) / 2 ;

        window[id]=window.open('',name,'width='+width+',height='+height+',left='+ Left +',top='+ Top +',scrolling=yes,resizable=yes,scrollbars=yes,status=yes,statusbar=yes');

        return false;
}