<!-- 
function resize_iframe(){ 
document.getElementById("mainFrame").height=360 

document.getElementById('mainFrame').height=window.frames["mainFrame"].document.body.scrollHeight + 0 
} 
// --> 

<!--
function calcHeight()
{
  //find the height of the internal page
  var the_height=
    document.getElementById('the_iframe').contentWindow.
      document.body.scrollHeight;

  //change the height of the iframe
  document.getElementById('the_iframe').height=
      the_height;
}
//-->