//--头部--//

function getOS(){
	 if(navigator.userAgent.indexOf("MSIE")>0) {    
        return 1;
	 }    

	if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){    
		 return 2;
	} 
}

function showdiv(obj)
{
  var tools = getOS();
  if(1==tools){
	//IE 切换代码 开始
	for(var i=1;i<4;i++)
	{
		var imgObject = document.getElementById("img"+i);
		var text = imgObject.src;
		if(i==obj) 
		{
			document.getElementById("tdid"+i).style.display = "block";	
			var p = text.replace('_on','');
			imgObject.src = p;	
		}
		else
		{
			document.getElementById("tdid"+i).style.display = "none";	
			if(text.indexOf('_on')==-1){
				var p = text.replace('index','index_on');
				imgObject.src = p;
			}
		}
	}
	//IE 切换代码 结束
  }else if(2==tools){

	//FF 切换代码 开始
	for(var i=1;i<4;i++)
	{
		var imgObject = document.getElementById("img"+i);
		var text = imgObject.getAttribute("src");
		if(i==obj) 
		{
			document.getElementById("tdid"+i).style.display = "";	
			var p = text.replace('_on','');
			imgObject.setAttribute("src",p);
		}
		else
		{
			document.getElementById("tdid"+i).style.display = "none";	
			if(text.indexOf('_on')==-1){
				var p = text.replace('index','index_on');
				imgObject.setAttribute("src",p);
			}
		}
	}

	//FF 切换代码 结束
  }
  
}
//--商品--//
function ShowHotShop(obj)
{
  for(var i=1;i<10;i++)
  {
	if(i==obj)
	{
		document.getElementById("shop"+i).className = "imghover";
		document.getElementById("shopshow"+i).style.display = "block";	
	}
	else
	{
		document.getElementById("shop"+i).className = "imgdefault";
		document.getElementById("shopshow"+i).style.display = "none";	 
	}
  }
}