function newwin(objpath,popupwidth,popupheight)
{
    var popup_width=popupwidth
    var popup_height=popupheight
    var screen_width=window.screen.width
    var screen_height=window.screen.height
    var popup_left=Math.round((screen_width-popup_width)/2)
    var popup_top=Math.round((screen_height-popup_height)/2) 
    var win1=open(objpath,"","status,height="+popup_height+",width="+popup_width+",resizable=yes,status=no,left="+popup_left+",top="+popup_top+",scrollbars=yes");

   win1.focus();
   win1.document.close()
}