/* $id: compare.js 15469 2008-12-19 06:34:44z testyang $ */
var compare = new object();

compare = {
  add : function(goodsid, goodsname, type)
  {
    var count = 0;
    for (var k in this.data)
    {
      if (typeof(this.data[k]) == "function")
      continue;
      if (this.data[k].t != type) {
        alert(goods_type_different.replace("%s", goodsname));
        return;
      }
      count++;
    }

    if (this.data[goodsid])
    {
      alert(exist.replace("%s",goodsname));
      return;
    }
    else
    {
      this.data[goodsid] = {n:goodsname,t:type};
    }
    this.save();
    this.init();
  },
  relocation : function()
  {
    if (this.comparebox.style.display != "") return;
    var diffy = math.max(document.documentelement.scrolltop,document.body.scrolltop);

    var percent = .2*(diffy - this.lastscrolly);
    if(percent > 0)
      percent = math.ceil(percent);
    else
      percent = math.floor(percent);
    this.comparebox.style.top = parseint(this.comparebox.style.top)+ percent + "px";

    this.lastscrolly = this.lastscrolly + percent;
  },
  init : function(){
    this.data = new object();
    var cookievalue = document.getcookie("compareitems");
    if (cookievalue != null) {
      this.data = $.evaljson(cookievalue);
    }
    if (!this.comparebox)
    {
      this.comparebox = document.createelement("div");
      var submitbtn = document.createelement("input");
      this.comparelist = document.createelement("ul");
      this.comparebox.id = "comparebox";
      this.comparebox.style.display = "none";
      this.comparebox.style.top = "200px";
      this.comparebox.align = "center";
      this.comparelist.id = "comparelist";
      submitbtn.type = "button";
      submitbtn.value = "开始对比";
			this.comparebox.appendchild(this.comparelist);
      this.comparebox.appendchild(submitbtn);
      submitbtn.onclick = function() {
        var cookievalue = document.getcookie("compareitems");
        var obj = $.evaljson(cookievalue);
        var url = document.location.href;
        url = url.substring(0,url.lastindexof('/')+1) + "compare.php";
        var i = 0;
        for(var k in obj)
        {
          if(typeof(obj[k])=="function")
          continue;
          if(i==0)
            url += "?goods[]=" + k;
          else
            url += "&goods[]=" + k;
          i++;
        }
        if(i<2)
        {
          alert(compare_no_goods);
          return ;
        }
        document.location.href = url;
      }
      document.body.appendchild(this.comparebox);
    }
    this.comparelist.innerhtml = "";
    var self = this;
    for (var key in this.data)
    {
      if(typeof(this.data[key]) == "function")
        continue;
      var li = document.createelement("li");
      var span = document.createelement("span");
      span.style.overflow = "hidden";
      span.style.width = "100px";
      span.style.height = "20px";
      span.style.display = "block";
      span.innerhtml = this.data[key].n;
      li.appendchild(span);
      li.style.liststyle = "none";
      var delbtn = document.createelement("img");
      delbtn.src = "themes/xiaomi/images/drop.gif";
      delbtn.classname = key;
      delbtn.onclick = function(){
        document.getelementbyid("comparelist").removechild(this.parentnode);
        delete self.data[this.classname];
        self.save();
        self.init();
      }
      li.insertbefore(delbtn,li.childnodes[0]);
      this.comparelist.appendchild(li);
    }
    if (this.comparelist.childnodes.length > 0)
    {
      this.comparebox.style.display = "";
      this.timer = window.setinterval(this.relocation.bind(this), 50);
    }
    else
    {
      this.comparebox.style.display = "none";
      window.clearinterval(this.timer);
      this.timer = 0;
    }
  },
  save : function()
  {
    var date = new date();
    date.settime(date.gettime() + 99999999);
    document.setcookie("compareitems", $.tojson(this.data));
  },
  lastscrolly : 0
}