/**
 *glide.layerGlide((oEventCont,oSlider,sSingleSize,sec,fSpeed,point);
 *@param auto type:bolean 是否自动滑动 当值是true的时候 为自动滑动
 *@param oEventCont type:object 包含事件点击对象的容器
 *@param oSlider type:object 滑动对象
 *@param sSingleSize type:number 滑动对象里单个元素的尺寸（width或者height）  尺寸是有point 决定
 *@param second type:number 自动滑动的延迟时间  单位/秒
 *@param fSpeed type:float   速率 取值在0.05--1之间 当取值是1时  没有滑动效果
 *@param point type:string   left or top
 */
var glide =new function(){
 function $id(id){return document.getElementById(id);};
 this.layerGlide=function(auto,oEventCont,oSlider,sSingleSize,second,fSpeed,point){
  var oSubLi = $id(oEventCont).getElementsByTagName('li');
  var interval,timeout,oslideRange;
  var time=1; 
  var speed = fSpeed 
  var sum = oSubLi.length;
  var a=0;
  var delay=second * 120000; 
  var setValLeft=function(s){
   return function(){
    oslideRange = Math.abs(parseInt($id(oSlider).style[point])); 
    $id(oSlider).style[point] =-Math.floor(oslideRange+(parseInt(s*sSingleSize) - oslideRange)*speed) +'px';  
    if(oslideRange==[(sSingleSize * s)]){
     clearInterval(interval);
     a=s;
    }
   }
  };
  var setValRight=function(s){
   return function(){   
    oslideRange = Math.abs(parseInt($id(oSlider).style[point]));       
    $id(oSlider).style[point] =-Math.ceil(oslideRange+(parseInt(s*sSingleSize) - oslideRange)*speed) +'px';
    if(oslideRange==[(sSingleSize * s)]){
     clearInterval(interval);
     a=s;
    }
   }
  }
  
  function autoGlide(){
   for(var c=0;c<sum;c++){oSubLi[c].className='';};
   clearTimeout(interval);
   if(a==(parseInt(sum)-1)){
    for(var c=0;c<sum;c++){oSubLi[c].className='';};
    a=0;
    oSubLi[a].className="active";
    interval = setInterval(setValLeft(a),time);
    timeout = setTimeout(autoGlide,delay);
   }else{
    a++;
    oSubLi[a].className="active";
    interval = setInterval(setValRight(a),time); 
    timeout = setTimeout(autoGlide,delay);
   }
  }
 
  if(auto){timeout = setTimeout(autoGlide,delay);};
  for(var i=0;i<sum;i++){ 
   oSubLi[i].onmouseover = (function(i){
    return function(){
     for(var c=0;c<sum;c++){oSubLi[c].className='';};
     clearTimeout(timeout);
     clearInterval(interval);
     oSubLi[i].className="active";
     if(Math.abs(parseInt($id(oSlider).style[point]))>[(sSingleSize * i)]){
      interval = setInterval(setValLeft(i),time);
      this.onmouseout=function(){if(auto){timeout = setTimeout(autoGlide,delay);};};
     }else if(Math.abs(parseInt($id(oSlider).style[point]))<[(sSingleSize * i)]){
       interval = setInterval(setValRight(i),time);
      this.onmouseout=function(){if(auto){timeout = setTimeout(autoGlide,delay);};};
     }
    }
   })(i)   
  }
 }
}
glide.layerGlide(true,'icon_num','show_pic',520,2,0.1,'left');