function foda(obj)
{
	var pa = obj.parentNode.parentNode.parentNode.parentNode;
	var pa1 = obj.parentNode.getElementsByTagName("div");
	var ta = pa.getElementsByTagName("ul");
	var na = pa1.length;
	for(i=0;i<na;i++)
	{
		if(pa1[i] == obj)
		{
			pa1[i].className = "title_a";
			ta[i].className = "dis";
		}
		else
		{
			pa1[i].className = "title_b";
			ta[i].className = "undis";				
		}
	}
}