function setTab(m,n,clsName1,clsName2){
var tli=document.getElementById("menu"+m).getElementsByTagName("li");
var mli=document.getElementById("main"+m).getElementsByTagName("ul");
for(i=0;i<tli.length;i++){
   tli[i].className=i==n?clsName1:clsName2;
   mli[i].style.display=i==n?"block":"none";
}
}



function setTabYx(m,str){
for(i=1;i<=4;i++){
   document.getElementById("yuanxtd"+i).className="xytd2";
   document.getElementById("yuanxtb"+i).style.display="none";
}
document.getElementById("yuanxtd"+m).className="xytd1";
document.getElementById("yuanxtb"+m).style.display="block";
}