$(document).ready(function () {

        var CurrNo = 0; //初始化	
        var MyTime = null;
        $('.focus_menu li').hover(
				    function () {
				        var fid = $('.focus_menu li').index(this);
				        CurrNo = fid;
				        showFocusImg(fid);
				        if (MyTime) { clearInterval(MyTime); }
				    },
					function () {
					    MyTime = setInterval(function () {
					        showFocusImg(CurrNo);
					        CurrNo++;
					        if (CurrNo == 7) { CurrNo = 0; }
					    }, 4000);
					}
				  );
        //设定时间
        MyTime = setInterval(function () {
            showFocusImg(CurrNo);
            CurrNo++;
            if (CurrNo == 7) { CurrNo = 0; }
        }, 4000);


        $('#sides li img').hover(
				    function () {
				        if (MyTime) { clearInterval(MyTime); }
				    },
				   function () {
				       MyTime = setInterval(function () {
				           showFocusImg(CurrNo);
				           CurrNo++;
				           if (CurrNo == 7) { CurrNo = 0; }
				       }, 3000);
				   }
				);

    });
    function showFocusImg(i) {
        var vtop = -parseInt(i * 218);
        $('.focus_menu li').eq(i).addClass('currt').siblings().removeClass('currt');
        $('#sides').animate({ top: vtop }, 200);
    }