var currentTag = 1;
function switchTag(obj,id){
	selectMenu(obj);
	for (var i =1,j; j=document.getElementById("tagTitle_"+i); i++){
		j.style.display="none";
	}
	document.getElementById("tagTitle_"+id).style.display="block";
	currentTag++;
	if (currentTag>8)
	currentTag=1;
}
function selectMenu(obj){
	var lia = document.getElementById("title").getElementsByTagName("li");
	var lialen = lia.length;
	for(i=0; i<lialen; i++){
		if(lia[i].getElementsByTagName("a")[0].className=="titlea")
		{
		   lia[i].getElementsByTagName("a")[0].className = "";
	    }
		if(lia[i].getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="titleSpan")
		{
		lia[i].getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="";
		}
	}
	obj.className = "titlea";
	obj.getElementsByTagName("span")[0].className="titleSpan";
	
}