var page_nav_li=['page_index n_index','page_furniture n_furniture','page_building_material_decoration n_building_material_decoration','page_lamp_light n_lamp_light','page_chinaware_sanitary n_chinaware_sanitary','page_home_textile n_home_textile','page_yizhanshi n_yizhanshi','page_market_league n_market_league','page_brand_field n_brand_field','page_shop_hire n_shop_hire','page_shop_list n_shop_list'];
for(i=0;i<page_nav_li.length;i++)
{      
var arr_tmp=page_nav_li[i].split(" ");
	if($(arr_tmp[0])&&$(arr_tmp[1]))
	{

	    addClass($(arr_tmp[1]), 'currrenta')
	    document.getElementById(arr_tmp[1]).style.color = 'white';
	break;
	}
}
function nav_art_op()
{
var onav=$("nav");
var onav_li_arr=onav.getElementsByTagName('li');
for(i=0;i<onav_li_arr.length;i++)
	{ 
	onav_li_arr[i].insertAdjacentHTML('beforeEnd','<span class=\"yj yj_left\"></span><span class=\"yj yj_right\"></span>');	
	}   
}
nav_art_op();