function init(){
	if(document.getElementById){
		X = document.getElementById('rightrowexpander');
		L = document.getElementById('mainContentLeft');
		R = document.getElementById('mainContentRight');
		L_Height = L.offsetHeight;
		R_Height = R.offsetHeight;
		if(L_Height > R_Height){
			X.style.height = (L_Height - R_Height) + 'px';
		}
	}
}

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;
}