function despliega(div)
{
	var undefined;
	
	if(window.lastDespliegue!=undefined) $(window.lastDespliegue).style.display = "none";
	window.lastDespliegue = div;
	Effect.SlideDown(div);
	return false;
}

function pliega(div)
{
	Effect.SlideUp(div);
	return false;
}