function changeHight(){
  var iFrm = parent.document.getElementById("pro_right");
     var subWeb = iFrm.contentDocument;
     if(subWeb){
    if (subWeb.body.scrollHeight>480)
   iFrm.height = subWeb.body.scrollHeight+20;
  else
      iFrm.height=500;
  } 
  if(top.document.frames["pro_right"].document && window.document.body.scrollHeight!="0"){
   parent.document.getElementById("pro_right").style.height=window.document.body.scrollHeight;
  }
  if(top.document.frames["pro_right"].document && window.document.body.scrollHeight=="0"){
   parent.document.getElementById("pro_right").style.height=500;
  }
}

function page(page){
    document.getElementById("pro_right").src=page;
}