function $(element) {
	return document.getElementById(element);
}
//修正ie name的问题
var getElementsByName = function(tag, name){
    var returns = document.getElementsByName(name);
    if(returns.length > 0) return returns;
    returns = new Array();
    var e = document.getElementsByTagName(tag);
    for(var i = 0; i < e.length; i++){
        if(e[i].getAttribute("name") == name){
            returns[returns.length] = e[i];
        }
    }
    return returns;
}

function proShow(){
	var bt_p = $('goods_promotion_tab');
	bt_p.onclick = function()
	{
		$('goods_best_div').style.display = 'none';
		$('goods_promotion_div').style.display = '';
	};
	var bt_b = getElementsByName("h2","all_tab");
	for (var i=0;i<bt_b.length;i++){
		bt_b[i].onclick = function()
		{
			$('goods_best_div').style.display = '';
			$('goods_promotion_div').style.display = 'none';
		}
	}
}
//切屏--是按钮，_v是内容平台，_h是内容库
function reg(str){
  var bt=$(str+"_b").getElementsByTagName("h2");
  for(var i=0;i<bt.length;i++){
    bt[i].subj=str;
    bt[i].pai=i;
    bt[i].style.cursor="pointer";
    bt[i].onclick=function(){
      $(this.subj+"_v").innerHTML=$(this.subj+"_h").getElementsByTagName("blockquote")[this.pai].innerHTML;
      for(var j=0;j<$(this.subj+"_b").getElementsByTagName("h2").length;j++){
        var _bt=$(this.subj+"_b").getElementsByTagName("h2")[j];
        var ison=j==this.pai;
        _bt.className=(ison?"":"h2bg");
      }
    }
  }
  $(str+"_h").className="none";
  $(str+"_v").innerHTML=$(str+"_h").getElementsByTagName("blockquote")[0].innerHTML;
}


function picturs(){
	var goodsimg = document.getElementById("goodsimg");
	var imglist = document.getElementById("imglist");
	var imgnum = imglist.getElementsByTagName("img");
	for(var i = 0; i<imgnum.length; i++){
		imgnum[i].onclick=function(){
			var lang = this.getAttribute("lang");
			goodsimg.setAttribute("src",lang);
			for(var j=0; j<imgnum.length; j++){
				if(imgnum[j].getAttribute("class") =="onbg" || imgnum[j].getAttribute("className") =="onbg"){
					imgnum[j].className = "autobg";
					break;
				}
			}
			this.className = "onbg";
		}
	}
}

function colorStyle(id,color1,color2){
  var elem = document.getElementById(id);
  if(elem.getAttribute("id") == id){
	  //elem.className = color1;
	  if(elem.className == color1)
		   elem.className = color2;
		else
		   elem.className = color1; 
	}
}

function articleSize(size,lineheight){
var article = document.getElementById("article");
article.style.fontSize = size+"px";
article.style.lineHeight = lineheight+"px";
}

function elems(id,cur){
var id = document.getElementById(id).getElementsByTagName("li");
for(var i=0; i<id.length; i++)
 {
	 id[0].className = "cur";
   id[i].onmouseover = function()
   {
    this.className="";
		for(var j=0; j<id.length; j++)
		{
			 if((id[j].getAttribute("class") == cur) || (id[j].getAttribute("className") == cur))
			 {
			 id[j].className = "";
			 break;
			 }
		}
	this.className = cur;	
   }
 }
}