function show_tooltip(id, text) {
	var element = $(id);
	var offset = element.cumulativeOffset();

	var windowOffset = document.viewport.getHeight();
	var hint = '<div class="h" style="top:-800px;left:' + (offset[0] - 207) + 'px"><div class="head">&nbsp;</div><div class="body">' + text + '<br style="clear:left" /></div><div class="foot">&nbsp;</div></div>';

	new Insertion.After(id, hint)
	var new_height = $$('div.h')[0].getHeight();

	$$('.h')[0].setStyle({
		'top':  (offset[1]) + 4 + 'px'
	});
}

function hide_tooltip() {
	$$('div.h')[0].remove();
}