function expandIframe () {

  if (window.anIframe && window.anIframe.scrollBy) {
    var ifr1 = window.anIframe;
    //IE
    if (document.all) {
     document.getElementById("anIframe").height = ifr1.document.body.scrollHeight ; 
    // alert(  ifr1.document.body.scrollWidth); 
     document.getElementById("anIframe").width = ifr1.document.body.scrollWidth;
    }
        //Netscape;
    else if (document.getElementById) {
         document.getElementById("anIframe").height = ifr1.document.height ;
     document.getElementById("anIframe").width = 150;
    }
  }
}