function _g(x)
{return document.getElementById(x);}
function $SB(obj,x){
    if(x==1)
        {obj.className="gbmouseover";obj.style.backgroundImage="url("+_g("ImgRoot").value+"/Attraction/button_over.gif)";}
    else
        {obj.className="gbmouseout";obj.style.backgroundImage="url("+_g("ImgRoot").value+"/Attraction/butten.jpg)";}
}

function $STMkey(){if(_g("tofield").value=="输入目的地关键字")_g("tofield").value="";}
function $STOkey(){if(_g("tofield").value=="")_g("tofield").value="输入目的地关键字";}