function over1(httppath)
{
    document.getElementById("change1").style.width="76px";
    document.getElementById("change1").style.paddingLeft="0";
    document.getElementById("change1").style.color = "white";
    document.getElementById("change1").style.backgroundImage="url(images/img/zyhy.jpg)";
    document.getElementById("change2").style.width="60px";
    document.getElementById("change2").style.paddingLeft="16px";
    document.getElementById("change2").style.color="#61AFE3";
    document.getElementById("change2").style.backgroundImage="url(images/img/qib.jpg)";
    document.getElementById("change3").style.width="60px";
    document.getElementById("change3").style.paddingLeft="16px";
    document.getElementById("change3").style.color="#61AFE3";
    document.getElementById("change3").style.backgroundImage="url(images/img/qib.jpg)";
    document.getElementById("az").href=httppath;
    document.getElementById("ch1").style.display = "block";
    document.getElementById("ch2").style.display = "none";
    document.getElementById("ch3").style.display = "none";
    
}
function over2(httppath)
{
    document.getElementById("change2").style.width="76px";
    document.getElementById("change2").style.paddingLeft="0";
    document.getElementById("change2").style.color = "white";
    document.getElementById("change2").style.backgroundImage="url(images/img/zyhy.jpg)";
    document.getElementById("change1").style.width="60px";
    document.getElementById("change1").style.paddingLeft="16px";
    document.getElementById("change1").style.color="#61AFE3";
    document.getElementById("change1").style.backgroundImage="url(images/img/qib.jpg)";
    document.getElementById("change3").style.width="60px";
    document.getElementById("change3").style.paddingLeft="16px";
    document.getElementById("change3").style.color="#61AFE3";
    document.getElementById("change3").style.backgroundImage="url(images/img/qib.jpg)";
    document.getElementById("az").href=httppath;
   document.getElementById("ch1").style.display = "none";
   document.getElementById("ch2").style.display = "block";
    document.getElementById("ch3").style.display = "none";
    
}
function over3(httppath)
{
    document.getElementById("change3").style.width="76px";
    document.getElementById("change3").style.paddingLeft="0";
    document.getElementById("change3").style.color = "white";
    document.getElementById("change3").style.backgroundImage="url(images/img/zyhy.jpg)";
    document.getElementById("change1").style.width="60px";
    document.getElementById("change1").style.paddingLeft="16px";
    document.getElementById("change1").style.color="#61AFE3";
    document.getElementById("change1").style.backgroundImage="url(images/img/qib.jpg)";
    document.getElementById("change2").style.width="60px";
    document.getElementById("change2").style.paddingLeft="16px";
    document.getElementById("change2").style.color="#61AFE3";
    document.getElementById("change2").style.backgroundImage="url(images/img/qib.jpg)";
   document.getElementById("az").href=httppath;
   document.getElementById("ch1").style.display = "none";
   document.getElementById("ch2").style.display = "none";
    document.getElementById("ch3").style.display = "block";
    
}