var actions = new Array();
function toggleVisibility(id)
{
	if(actions[id] != 'undefined' && actions[id])
		return false;
	
	actions[id] = true;
	var element = document.getElementById(id);

	if(element.style.display == 'block')
	{
		$("#"+id).hide('slide', {direction: "up"}, 500, function() {
			element.style.display = 'none';
			actions[id] = false;
		});
	}
	else
	{
		element.style.display = 'block';
		$("#"+id).show('slide', {direction: "up"}, 500, function() {
			actions[id] = false;
		});
	}
}