function lister()
{
	var set = document.getElementById('sub-nav');
	var top = set.childNodes;
	var lnt = top.length;
	for(var i=0; i<lnt; i++)
	{
		var lnk = top[i].childNodes[0];
		
		lnk.onclick = function()
		{
			if(this.parentNode.className == 'link') {
				return;
			} else {
				if(this.parentNode.className == '')
				{
					for(var j=0; j<lnt; j++)
					{
						top[j].className = '';
					}
					this.parentNode.className = 'active';
				}
				else
				{
					this.parentNode.className = '';
				}
				return false;
			}
		}			
	}
}
window.onload = lister;