function show_nav_detail(obj){
   if(obj.id.indexOf('detail')<0){
        obj.className = 'daohang2';
		var erji_id = obj.id+'_detail';
		document.getElementById(erji_id).className='erji_daohang_focus';
		var navs = document.getElementsByName('category_nav');
		if(navs){
		     for(var i=0;i<navs.length;i++){
			      if(navs[i].id != obj.id){
				     navs[i].className = 'daohang';
					 document.getElementById(navs[i].id+'_detail').className='erji_daohang';
				  }
			 }
		}
	}else{
	     obj.className = 'erji_daohang_focus';
		 var nav_id = obj.id.replace('_detail','');
		 var navs = document.getElementsByName('category_nav');
		if(navs){
		     for(var i=0;i<navs.length;i++){
			      if(navs[i].id != nav_id){
				     navs[i].className = 'daohang';
					 document.getElementById(navs[i].id+'_detail').className='erji_daohang';
				  }
			 }
	}
  }
}
  function hidden_nav_detail(obj){
   if(obj.id.indexOf('detail')<0){
     obj.className = 'daohang';
     var erji_id = obj.id+'_detail';
	 document.getElementById(erji_id).className='erji_daohang';
	 }else{
      obj.className = 'erji_daohang';
	   var nav_id = obj.id.replace('_detail','');
	   document.getElementById(nav_id).className='daohang';
   }
  }
function getPos(e) 
{
 var t=e.offsetTop;  
 var l=e.offsetLeft;  
 while(e=e.offsetParent) 
 {  
  t+=e.offsetTop;  
  l+=e.offsetLeft;  
 }  
 var rec = new Array(1); 
 rec[0]=l; 
 rec[1]=t; 
 return rec;
}
function showKind(o,v,h)
{
	var om=document.getElementById("fldh"+v);
	if(om.style.display=="none")
	{
		o.className="kmenu1";
		var arr=getPos(document.getElementById("fldh"));
		om.style.left=(arr[0]+38)+"px";
		om.style.top=(arr[1]+h)+"px";
		om.style.display="";
	}
	else
	{
		o.className="kmenu0";
		om.style.display="none";
	}
}