// JavaScript Document
// JavaScript Document

function moveElement(elementID,final_x,final_y,interval){
	
 if(!document.getElementById) return false;
 if(!document.getElementsByTagName) return false;
 var elem = document.getElementById(elementID);
 
 if(elem.movement){
 clearTimeout(elem.movement);
 }
 if(!elem.style.left){
  elem.style.left="0px";
 }
 if(!elem.style.top){
  elem.style.top="0px";
 }
 
 var xpos = parseInt(elem.style.left);
 
 var ypos = parseInt(elem.style.top);
 
 
 if(xpos == final_x && ypos == final_y){
  return true;
  }
 if(xpos<final_x){
  var dist =Math.ceil((final_x-xpos)/10);
  xpos = xpos + dist;
  }
   
 if(xpos>final_x){
  var dist = Math.ceil((xpos-final_x)/10);
  xpos = xpos -dist;
  }
 if(ypos < final_y){
  var dist = Math.ceil((final_y-ypos)/10);
  ypos = ypos +dist;
  }
 if(ypos > final_y){
  var dist = Math.ceil((ypos-final_y)/10);
  ypos = ypos-dist;
  }
  elem.style.left = xpos + "px";
  elem.style.top = ypos + "px";
  var repeat = "moveElement('"+elementID+"',"+final_x+","+final_y+","+interval+")";
  elem.movement = setTimeout(repeat,interval);
 
 }
 
 
 
function prepareSlideshow(){

 if(!document.getElementById) return false;
 if(!document.getElementsByTagName) return false;
 
 var preview = document.getElementById("newpro_list");//图片
 preview.style.position = "absolute";
 /*var list = document.getElementById("linklist");
 var links = list.getElementsByTagName("a");
 
 links[0].onmouseover = function(){
  
  moveElement("preview",-200,0,10);
  
  }
  
 links[1].onmouseover = function(){
  moveElement("preview",-300,0,10);
  }
 links[2].onmouseover = function(){
  moveElement("preview",-400,0,10);
  }
 */
 document.getElementById("product-slides-l").onclick = function(){
	 moveElement("newpro_list",-680,0,10);
	 };
 document.getElementById("product-slides-r").onclick = function(){
	 moveElement("newpro_list",0,0,10);
	 };
 }
 
 /*function addLoadEvent(func){
	var oldonload = window.onload;
		if(typeof window.onload != 'function'){
			window.onload = func;
		}else{
			window.onload = function(){
				oldonload();
				func();
			}
		}
}*/
//addLoadEvent(prepareSlideshow);