function changeIocn(a,n)
{
    if(n == 5)
    {
       document.getElementById("td1").innerHTML = "创意设计";
       document.getElementById("td2").innerHTML = "设计沙龙";
       document.getElementById("td3").innerHTML = "家具展会";
       document.getElementById("td4").innerHTML = "理论技术";
       document.getElementById("td5").innerHTML = "设计心得";
       document.getElementById("td"+a).innerHTML = "<img src=img/furniture_"+a+".gif />";
    }
    else if(n == 3)
    {
       document.getElementById("tdhot1").innerHTML = "热点导读";
       document.getElementById("tdhot2").innerHTML = "设计资讯";
       document.getElementById("tdhot3").innerHTML = "精品画廊";
       document.getElementById("tdhot"+a).innerHTML = "<img src=img/hotspot_"+a+".jpg />";
    }
    else if(n == 4)
    {
       b = a + 22;
       document.getElementById("tdimg1").innerHTML = "<img src=img/23.gif onclick=getView(1,4,'divaa','A') />";
       document.getElementById("tdimg2").innerHTML = "<img src=img/24.gif onclick=getView(2,4,'divaa','A') />";
       document.getElementById("tdimg3").innerHTML = "<img src=img/25.gif onclick=getView(3,4,'divaa','A') />";
       document.getElementById("tdimg4").innerHTML = "<img src=img/26.gif onclick=getView(4,4,'divaa','A') />";
       document.getElementById("tdimg"+a).innerHTML = "<img src=img/"+b+"_A.gif onclick=getView("+a+",4,'divaa','A') />";
    }
    else if(n == 2)
    {
       document.getElementById("td1").className = "tdright";
       document.getElementById("td2").className = "tdright";
       document.getElementById("td"+a).className = "tdleft";
    }
}

function getView(a,n,id,classname)
{
    var classb = classname+"b";
    var classa = classname+"a";
    if(n == 2)
    {
       classa = classname;
    }
    var aaa = id;
    for(var i = 1 ; i <= n ; i++)
    {
       document.getElementById(aaa+i).className = classb;
       if(i == a)
       {
           document.getElementById(aaa+i).className = classa;
       }
    }
    changeIocn(a,n);
}