var ok_obj2=document.getelementbyid("view_pic2").getelementsbytagname("li");
var ok2=math.ceil(ok_obj2.length/5)-1;
var ele2=document.getelementbyid("description2");
var w2=ele2.clientwidth / 5;
var n2=20,t2=50;
var timers2=new array(n2);
var k2=0;

doslide2(0);

function doslide2(s2){
  if (k2>=ok2 &&s2>0|| k2<=0 &&s2<0)menuclick2()
 else{
  k2+=s2;
    var x2=ele2.scrollleft;
    var d2=k2*w2-x2;
    for(var i=0;i<n2;i++)(
    	function(){
    		if(timers2[i]) cleartimeout(timers2[i]);
    		var j=i;
//    		alert(x)
    		timers2[i]=settimeout(function(){ele2.scrollleft=x2+math.round(d2*math.sin(math.pi*(j+1)/(2*n2)));},(i+1)*t2);
    	}
    )();
}}

var intdelay=30; //设置菜单显示速度，越大越慢
var intinterval=5;