function getElement(objID) {
  if (document.getElementById) {
    return document.getElementById(objID);
  } else if (document.all) {
    return document.all(objID);
  } else if (document.layers) {
    document.layers(objID);
  }
}

function autoResize(id){
    var newheight;
    var newwidth;

    if(document.getElementById){
        newheight=document.getElementById(id).contentWindow.document .body.scrollHeight;
        newwidth=document.getElementById(id).contentWindow.document .body.scrollWidth;
    }

    document.getElementById(id).height= (newheight) + "px";
    document.getElementById(id).width= (newwidth) + "px";
}