function winclose() {
     window.close()
}

  function is_opener() {

      var ua = navigator.userAgent
      if(!!window.opener)
          if( ua.indexOf('MSIE 4')!=-1 && ua.indexOf('Win')!=-1) 
               return !window.opener.closed
          else return typeof window.opener.document  == 'object'
      else return false

  }

  function loadToopener(url){

   if(is_opener()) window.opener.location.href=url
   else            window.open(url,"targetName")
   
  }