// JavaScript Document
//控制ie6PNG图片
function correctPNG()  
{ 
for(var i=0; i<document.images.length; i++) 
{ 
  var img = document.images[i] 
  var imgName = img.src.toUpperCase() 
  if (imgName.substring(imgName.length-3, imgName.length) == "PNG") 
  { 
   var imgID = (img.id) ? "id='" + img.id + "' " : "" 
   var imgClass = (img.className) ? "class='" + img.className + "' " : "" 
   var imgTitle = (img.title) ? "title='" + img.title + "' " : "title='" + img.alt + "' " 
   var imgStyle = "display:inline-block;" + img.style.cssText  
   if (img.align == "left") imgStyle = "float:left;" + imgStyle 
   if (img.align == "right") imgStyle = "float:right;" + imgStyle 
   if (img.parentElement.href) imgStyle = "cursor:hand;" + imgStyle   
   var strNewHTML = "<span " + imgID + imgClass + imgTitle 
   + " style=\"" + "width:" + img.width + "px; height:" + img.height + "px;" + imgStyle + ";" 
  + "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader" 
   + "(src=\'" + img.src + "\', sizingMethod='image');\"></span>"  
   img.outerHTML = strNewHTML 
   i = i-1 
  } 
}

} 
 
 

//tab滑块
function tabChange(obj,id)
{
 var arrayli = obj.parentNode.getElementsByTagName("li"); //获取li数组
 var arrayul = document.getElementById(id).getElementsByTagName("ul"); //获取ul数组
 for(i=0;i<arrayul.length;i++)
 {
  if(obj==arrayli[i])
  {
   arrayli[i].className = "login_click";
   arrayul[i].className = "";
  }
  else
  {
   arrayli[i].className = "";
   arrayul[i].className = "hidden";
  }
 }
}


//导航滑块效果
$(document).ready(function(){
 $("#menu img").hover(
  function(){
	var menu_id = "images/"+this.id+"_H.jpg";
	//alert(menu_id);
	$(this).attr("src",menu_id);
  },
  function(){
	 var menu_id = "images/"+this.id+".jpg";
	 $(this).attr("src",menu_id);
   })					   
})