//resize iframe http://www.programmingtalk.com/showthread.php?t=25995
function calcHeight(id)
{
  if(typeof id == 'undefined'){
	id = 'myframe';
  }
	
  //find the height of the internal page
  var the_height=
	document.getElementById(id).contentWindow.
	  document.body.scrollHeight;

  //change the height of the iframe
  document.getElementById(id).height=
	  the_height + 90;
}
	
//based on window.onload on http://simonwillison.net/2004/May/26/addLoadEvent/
function addFrameEvent(id, func) {
    var oldonload = document.getElementById(id).onload;
    if (typeof document.getElementById(id).onload != 'function') {
        document.getElementById(id).onload = func;
    } else {
        document.getElementById(id).onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}