function $(id)
{
	return document.getElementById(id);
}

function navbarF(navid)
{
	var liObj = $(navid).getElementsByTagName('li');
	var liLength = liObj.length;
	var cn = 'nav_';
	var cno = 'nav_o_';
	
	for(var i = 0; i<liLength; i++)
	{
		liObj[i].obj = i;
		
		function navF(j,isOver)
		{
			var aObj = liObj[j].getElementsByTagName('a');
			var spanObj = liObj[j];
			var aLength = aObj.length;
			
			if(isOver)
			{
				for(var i = 0; i<aLength; i++)
				{
					aObj[i].style.display = 'block';
				}
				spanObj.className = cno + j;
			}
			else
			{
				for(var i = 0; i<aLength; i++)
				{
					aObj[i].style.display = 'none';
				}
				spanObj.className = cn + j;
			}
		}
		
		liObj[i].onmouseover = function()
		{
			var j = this.obj;
			navF(j,true);
		}
		
		liObj[i].onmouseout = function()
		{
			var j = this.obj;
			navF(j,false);
		}
	 }
 }
 window.setTimeout("navbarF('nav')", 500);