function setHeight(frame_id,frame_name) {
	document.getElementById(frame_id).height = ( parent.frames[frame_name].document.body.clientHeight || parent.frames[frame_name].document.body.scrollHeight );
}

function clickhandler(event,elm) {
	if (!event) { event = window.event; }
	var hx, hy;
	if (document.all) { // for IE
	        hx = event.offsetX;
	        hy = event.offsetY;
	} else {
	        hx = event.layerX;
	        hy = event.layerY;
	}
	/*
		var offset = elm.positionedOffset(); // prototype.js v1.6
		hx -= offset[0];
		hy -= offset[1];
	*/
	alert("left:"+hx+"px; top:"+hy+"px;");
}