function Y(id){
    return document.getElementById(id);
}    

//层切换
function divCheck1(bit){
    var aArr = Y("main3_left1").getElementsByTagName('span')
    if(bit)
    {
        if(Y("main3_left1").className == "divQie1")
        {
            Y("main3_left1").className = "divQie2";
            aArr[0].className = "divQieA1";
            aArr[1].className = "divQieA2";
            Y("main3_left2").style.display = "block";
            Y("main3_left3").style.display = "none";
        }
    }else
    {
        if(Y("main3_left1").className == "divQie2")
        {
            Y("main3_left1").className = "divQie1";
            aArr[0].className = "divQieA2";
            aArr[1].className = "divQieA1";
            Y("main3_left2").style.display = "none";
            Y("main3_left3").style.display = "block";
        }
    }
}

function YahooLoad()
{
    var login = document.getElementById("yahoo");
    var yhzc = document.getElementById("yhzc");
    var ul = login.getElementsByTagName("ul");
    var lis = ul[0].getElementsByTagName("li");
    var allspan = ul[0].getElementsByTagName("span");
    var divs = login.getElementsByTagName("div");

    for(var x = 1; x < 4; x++)
    {
        show();
    }
    
    function show()
    {
        var test = "btype" +x;
        var btype = document.getElementById("btype" + x);
        var as = btype.getElementsByTagName("a");
        var bdivs = btype.getElementsByTagName("div");
        var spans = btype.getElementsByTagName("span");
        
        for(var i = 0; i < spans.length; i++)
        {
            spans[i].num = i;
            spans[i].onmouseover = type;
        }
        
        function type()
        {
            for(var i = 0; i < lis.length; i++)
            {lis[i].className = null;}
            for(var i = 0; i < allspan.length; i++)
            {allspan[i].id = null;}
            for(var i = 0; i < divs.length; i++)
            {divs[i].className = null;}
            yhzc.id = null;
            spans[this.num].id = spans[this.num].className;
            bdivs[this.num].className = "block";
            btype.className = "hoverli";
        }
    }
}