function woaicssq(num){
    for(var id = 1;id<=3;id++)
    {
    var MrJin="woaicss_con"+id;
    if(id==num)
    document.getElementById(MrJin).style.display="block";
    else
    document.getElementById(MrJin).style.display="none";
    }
    if(num==1) 
    document.getElementById("woaicsstitle").className="woaicss_title woaicss_title_bg1";
    if(num==2)
    document.getElementById("woaicsstitle").className="woaicss_title woaicss_title_bg2";
    if(num==3)
    document.getElementById("woaicsstitle").className="woaicss_title woaicss_title_bg3";
    }