function show_menu(menu_item, anchor_item) {
	obj = document.getElementById(menu_item);
	anc = document.getElementById(anchor_item);
	
	var r = getAbsolutePosition(anc);

	obj.style.top = (r.y + 35)+'px';
	obj.style.left = r.x+'px';
	
	obj.style.display = "block";
}

function hide_menu(menu_item) {
	obj = document.getElementById(menu_item);
	obj.style.display = "none";
}

function getAbsolutePosition(element) {
	var pos = { x: element.offsetLeft, y: element.offsetTop };
	if (element.offsetParent) {
		var tmp = getAbsolutePosition(element.offsetParent);
		pos.x += tmp.x;
		pos.y += tmp.y;
	}
	return pos;
}