function dropdown (id) 
{
		if ($(id).style.display=='none') {
			pullup();
			$('sidebar').style.display = 'block';
			Effect.BlindDown(id,{from: 0.5, to: 1.0, duration: 0.7});
		}
		return false;
}

function pullup ()
{
	var elements = document.getElementsByClassName('sidenav');
	for (var i = 0; i < elements.length; i++)
	{
		elements[i].style.display = 'none';
	}
	return false;
}