var saxBody = document.getElementById("saxBody");


if (typeof document.attachEvent != "undefined"){  // <-- user is using IE
	saxBody.attachEvent("onLoad", expandFrame);
	expandFrame();
}
else 
	saxBody.addEventListener("load", expandFrame, true);




function expandFrame(event) {

		var bodHeight = document.getElementById("saxBody");
		parent.document.getElementById("mainStuff").style.height = 100+bodHeight.offsetHeight + "px";
		
			
	}