function Show_BlkBlackTab(BlkBlackTabid_num,BlkBlackTabnum){
    for(var i=0;i<3;i++){document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+i).style.display="none";}
    document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+BlkBlackTabnum).style.display="block";
}

var ok_obj=document.getElementById("piccontent").getElementsByTagName("LI")
var ok=Math.ceil(ok_obj.length/4)-1
var ele=document.getElementById("description");
var w=ele.clientWidth;
var n=18,t=50;
var timers=new Array(n);
var k=0;doSlide(0);
function doSlide(s){
  if (k>=ok &&s>0|| k<=0 &&s<0) return true;
  else{
  k+=s;
    var x=ele.scrollLeft;
    var d=k*w-x;
    for(var i=0;i<n;i++)(
        function(){
            if(timers[i]) clearTimeout(timers[i]);
            var j=i;
//          alert(x)
            timers[i]=setTimeout(function(){ele.scrollLeft=x+Math.round(d*Math.sin(Math.PI*(j+1)/(2*n)));},(i+1)*t);
        }
    )();
}}