//广告切换
function changeImg()
{
	var rand = Math.ceil(Math.random()*1000)%3;

	if(rand == 0)
		left_banner_show('left',3,1,1,'left_adv');
	else if(rand == 1)
		left_banner_show('left',3,2,2,'left_adv');
	else
		left_banner_show('left',3,3,3,'left_adv');
}


//中栏各栏目跳换
function mid_menu_display(obj,menu_sum,menu_str,menu_num,catid,secid,url)
{	
	for(var i=1;i<=menu_sum;i++)
	{
		if(i != menu_num)	
			document.getElementById(menu_str+"_menu"+i).className = '';
	}
	switch(menu_str)
	{
		case "mid1":	
			obj.className = 'now';
			readcontent(catid,secid,menu_num,menu_str+'_menu','menu',url,menu_str);
			break;
		case "nanny":
		case "mid2":
			obj.className = 'now';
			for(i=1;i<=menu_sum;i++)
			{
				if(menu_num == i)
					document.getElementById(menu_str+'_menu_'+i).style.display = '';
				else
					document.getElementById(menu_str+'_menu_'+i).style.display = 'none';
			}
			break;
		case "mid3":
			obj.className = 'now';
			readcontent(catid,secid,0,menu_str+'_menu','menu',url,menu_str);
			break;
		case "mid4":
			obj.className = 'now';
			for(i=1;i<=menu_sum;i++)
			{
				if(menu_num == i)
					document.getElementById(menu_str+'_content'+i).style.display = '';
				else
					document.getElementById(menu_str+'_content'+i).style.display = 'none';
			}
			break;
		case "mid5":
			obj.className = 'now';
			readcontent(catid,secid,10,menu_str+'_menu','list',url,menu_str);
			break;
		case "right2":
			obj.className = 'now2';
			readcontent(catid,secid,0,menu_str+'_menu','shop_list',url,menu_str);
			break;
		default:
			//readcontent(catid,secid,0,menu_str+'_menu','menu',url,menu_str);
			break;
	}		
}


function mid_menu_switch(obj,menu_sum,menu_str,menu_num)
{	
	for(var i=1;i<=menu_sum;i++)
	{
		if(i != menu_num)	
			document.getElementById(menu_str+"_menu"+i).className = '';
	}
	  obj.className = 'now';
	 for(i=1;i<=menu_sum;i++)
	 {
	   if(menu_num == i)
		    document.getElementById(menu_str+'_content'+i).style.display = '';
		 else
			 document.getElementById(menu_str+'_content'+i).style.display = 'none';
	  } 
}


//右栏menu切换
function right_menu_display(obj,menu_sum,menu_str,menu_num)
{
	switch(menu_str)
	{
		case "right1":
			obj.className = 'now1';
			break;		
		default:
			alert('ERROR!');
			break;
	}
	for(var i=1;i<=menu_sum;i++)
	{
		if(i != menu_num)	
			document.getElementById(menu_str+"_menu"+i).className = '';
	}
	for(i=1;i<=menu_sum;i++)
	{
		if(menu_num == i)
			document.getElementById(menu_str+'_content'+i).style.display = '';
		else
			document.getElementById(menu_str+'_content'+i).style.display = 'none';
	}
}

//显示中栏list
function mid_list_display(list_sum,list_str,list_num,catid,secid,url)
{
	if(list_str == 'right2')
	{
		for(i=1;i<=list_sum;i++)
		{
			if(list_num == i)
				document.getElementById(list_str+'_list'+i).style.display = '';
			else
				document.getElementById(list_str+'_list'+i).style.display = 'none';
		}
		readcontent(catid,secid,list_num-1,list_str+'_content','shop_content',url,list_str);
	}
	else
	{
		document.getElementById(list_str+"_list"+list_num).className += ' now';
		for(var i=1;i<=list_sum;i++)
		{
			if(i != list_num)
			{
				var classname = document.getElementById(list_str+"_list"+i).className;			
				classname = classname.replace(/now/g,'');
				document.getElementById(list_str+'_list'+i).className = classname;
			}
		}
		readcontent(catid,secid,list_num-1,list_str+'_content','content',url,list_str);
	}
}

//延迟执行
var delay = '';
function mid_list_display_delay(list_sum,list_str,list_num,catid,secid,url)
{
	if(list_str == 'right2')
	{
		delay = window.setTimeout(function(){ readcontent(catid,secid,list_num-1,list_str+'_content','shop_content',url,list_str);},2000);
		for(i=1;i<=list_sum;i++)
		{
			if(list_num == i)
				document.getElementById(list_str+'_list'+i).style.display = '';
			else
				document.getElementById(list_str+'_list'+i).style.display = 'none';
		}
	}
	else
	{
		document.getElementById(list_str+"_list"+list_num).className += ' now';
		for(var i=1;i<=list_sum;i++)
		{
			if(i != list_num)
			{
				var classname = document.getElementById(list_str+"_list"+i).className;			
				classname = classname.replace(/now/g,'');
				document.getElementById(list_str+'_list'+i).className = classname;
			}
		}
		delay = window.setTimeout(function(){readcontent(catid,secid,list_num-1,list_str+'_content','content',url,list_str);},2000);
	}
}

//cleartime
function cleartimer()
{
	window.clearTimeout(delay);
}

//show  banners
function left_banner_show(ban_str,ban_sum,ban_num,bid,banstr)
{
	for(var i=1;i<=ban_sum;i++)
	{
		if(i != ban_num)	
		{
			document.getElementById(ban_str+"_b"+i).className = '';
			document.getElementById(banstr+i).style.display = 'none';
		}
		else
		{
			document.getElementById(ban_str+"_b"+i).className = 'now';
			document.getElementById(banstr+i).style.display = '';
		}
	}
	//readcontent(bid,'','',banstr,'banner','','');
}

// show all links
function link_exchange(img_url)
{
	if(document.getElementById('link_more').style.display == '') 
	{
		document.getElementById('link_more').style.display = 'none';
		document.getElementById('link_img').src = img_url+'btn_displaylink.gif';
	}
	else 
	{
		document.getElementById('link_more').style.display = ''; 
		document.getElementById('link_img').src = img_url+'btn_closelink.gif';
	}
}

//commonsense 切换
function com_menu(menu_str,menu_sum,menu_num)
{	
	for(var i = 1;i<=menu_sum;i++)
	{
		if(menu_num == i)
		{
			document.getElementById(menu_str+"_menu"+i).className = 'ctab0';
			document.getElementById(menu_str+"_content"+i).style.display = '';
		}
		else
		{
			document.getElementById(menu_str+"_menu"+i).className = 'ctab1';
			document.getElementById(menu_str+"_content"+i).style.display = 'none';
		}
	}
}

//expert_blog
function expert_blog(list_sum,list_num)
{
	for(var i=0;i<list_sum;i++)
	{
		if(i==list_num)
		{
			document.getElementById('expert_info'+i).style.display = '';
			document.getElementById('expert_list'+i).style.display = 'none';
		}
		else
		{
			document.getElementById('expert_info'+i).style.display = 'none';
			document.getElementById('expert_list'+i).style.display = '';
		}
	}
}

//list-content shop_goods_show
function lc_menu_display(showid,specialid,goodscatid,maxage,minage,nlstr,lcontent,start,sum,num,info,secid)
{	
	//判断是频道页还是内容页
	switch (showid)
	{
		case 2:
			showclass = "proTab0";
			unshowclass = "proTab1";
			break;
		case 4:
			showclass = "now2";
			unshowclass = "";
			break;
		default:
			showclass = "now2";
			unshowclass = "";
			break;
	}
	for(var i=1;i<=sum;i++)
	{
		if(i == num)	
			document.getElementById(lcontent+i).className = showclass;
		else
			document.getElementById(lcontent+i).className = unshowclass;
	}
	lc_read(showid,specialid,goodscatid,maxage,minage,nlstr,lcontent,start,sum,num,info,secid);
}

function lc_shop_display(showid,specialid,goodscatid,maxage,minage,nlstr,lcontent,start,sum,num,info,secid)
{
	var showcount ;
	//判断是频道页还是内容页
	switch (showid)
	{
		case 2:
			showcount = 4;
			break;
		case 4:
			showcount = 5;
			break;
		default:
			showcount = 5;
			break;
	}
	if(sum>showcount)
		summ = showcount;
	else
		summ = sum;
	for(i=0;i<summ;i++)
	{
		if(num == i)
			document.getElementById(lcontent+i).style.display = '';
		else
			document.getElementById(lcontent+i).style.display = 'none';
	}
	lc_read(showid,specialid,goodscatid,maxage,minage,nlstr,lcontent,start,sum,num,info,secid);
}

function lc_read(showid,specialid,goodscatid,maxage,minage,nlstr,lcontent,start,sum,num,info,secid)
{  
  var xmlhttp=initxmlhttp();
  var showcontent=document.getElementById(lcontent);
  var url="http://" + host_name + "/ajax/ajax_lc.php?showid="+showid+"&specialid="+specialid+"&goodscatid="+goodscatid+"&maxage="+maxage+"&minage="+minage+"&nlstr="+nlstr+"&lcontent="+lcontent+"&start="+start+"&sum="+sum+"&num="+num+"&action="+info+"&secid="+secid;
  xmlhttp.open("GET",url,true);
  xmlhttp.setRequestHeader("Cache-Control","no-cache,must-revalidate");
  xmlhttp.setRequestHeader("If-Modified-Since","0");
  xmlhttp.onreadystatechange=function(){
	if(xmlhttp.readyState==4 && xmlhttp.status==200)
	{
		showcontent.innerHTML=xmlhttp.responseText;
	}
	/*else
    {
        showcontent.innerHTML = "<div style='text-align:center;'>数据加载中……</div>";
     }*/
  }
  xmlhttp.send(null);
}

function shopgoods_change(sum,num,str,listnum)
	{
		for(var i=1;i<=sum;i++)
		{
			if(i == num)
			{
				if(str == 'right2_menu')
				{
					document.getElementById(str+i).className = "now2";					
					document.getElementById(str+'_'+i).style.display = "";
				}
				
				if(str == 'right2_content')
				{
					document.getElementById(str+listnum+i).style.display = '';
					document.getElementById(str+listnum+'_'+i).style.display = "";
				}
			}
			else
			{
				if(str == 'right2_menu')
				{
					document.getElementById(str+i).className = "";
					document.getElementById(str+'_'+i).style.display = "none";
				}			
				
				if(str == 'right2_content')
				{
					document.getElementById(str+listnum+i).style.display = 'none';
					document.getElementById(str+listnum+'_'+i).style.display = "none";
				}
			}
		}
	}
	
function pd_menu_display(obj,menu_sum,menu_str,menu_num,catid,secid,url)
{	
	for(var i=1;i<=menu_sum;i++)
	{
		if(i != menu_num)	
			document.getElementById(menu_str+"_menu"+i).className = 'proTab1';
		else
			document.getElementById(menu_str+"_menu"+i).className = 'proTab0';
	}
	readcontent(catid,secid,0,menu_str+'_menu','pd_shop_list',url,menu_str);
}

function pd_list_display(list_sum,list_str,list_num,catid,secid,url)
{
	for(i=1;i<=list_sum;i++)
	{
		if(list_num == i)
			document.getElementById(list_str+'_list'+i).style.display = '';
		else
			document.getElementById(list_str+'_list'+i).style.display = 'none';
	}
	readcontent(catid,secid,list_num-1,list_str+'_content','pd_shop_content',url,list_str);
}