//鼠标经过切换标签函数
function swap_tag_(a,n,total){
	for(var i=1;i<=total;i++){
	var curA=document.getElementById(a+'t'+i);
	var curB=document.getElementById(a+'l'+i);
	if(n==i){
	curA.className="current";
	curB.className="current";
	}else{
	curA.className=" ";
	curB.className=" ";
	}
	}
}