function iFrameHeight() {
		scroll(0,0);
if(document.getElementById && !(document.all)) {
		h = document.getElementById('mainframe').contentDocument.body.scrollHeight;
		document.getElementById('mainframe').style.height = h;
	}
	else if(document.all) {
		h = document.frames('mainframe').document.body.scrollHeight;
		document.all.mainframe.style.height = h;
	}

}