function leitai(ids,cons,dis){
document.getElementById(ids).getElementsByTagName('li')[0].className='active';
 document.getElementById(cons).innerHTML=document.getElementById(dis+"l1").innerHTML;
 //document.getElementById(ids).onmouseover=function(o){onmousOver(o,ids,cons,dis);}//鼠标指向激发效果
 document.getElementById(ids).onclick=function(o){onmousOver(o,ids,cons,dis);}//点击激发效果
}
function onmousOver(o,ids,cons,dis){
var o = o || window.event;
var obj=o.target || o.srcElement;
obj=obj.parentNode;
if (obj.tagName=='LI'){
 if (obj.className=='active'||obj.id=='more')return;
 var o=document.getElementById(ids).getElementsByTagName('li');
 for (var i=0;i<=o.length-1;i++){o[i].className='default'}
 obj.className='active';
 if (obj.className=='active'){document.getElementById(cons).innerHTML=document.getElementById(dis+obj.id).innerHTML;}
}
}

function rollText(a){
clearInterval(rollText_tt);
rollText_tt=setInterval("rollText(1)",3000);
rollText_i+=a;
if (rollText_i>rollText_k){rollText_i=1;}
if (rollText_i==0){rollText_i=rollText_k;}
//alert(i)
for (var j=1; j<=rollText_k; j++){
document.getElementById("rollTextMenu"+j).style.display="none";
}
document.getElementById("rollTextMenu"+rollText_i).style.display="block";
} 

/*
<script type="text/javascript">
init('nav2','con2',"div2_",1);
</script>*/