function hide_menu()
{
	var menu = document.getElementById('menu1');
	var elements = menu.getElementsByTagName('ul')[0].getElementsByTagName('li');
	
	for (var index = 0; index < elements.length; ++index)
	{
		var li = elements[index];
		var a = li.getElementsByTagName('a')[0];

		turn(a);
	}
}

function turn(element)
{
	try{
		if (element){
			element = element.parentNode.getElementsByTagName('li')[0].lastChild.parentNode.parentNode;
			(element.style.display!='none') ? element.style.display = 'none' : element.style.display = 'block';
		}
	}
	catch(e){}
	return;	
}