function show_nav(vnumber){
	var nav = new Array();
	nav[0] =  "";
	nav[1] =  "<a href=\"\/4_Download\/\">全部<\/a> \| <a href=\"\/5_Mania_Download\/\">Mania下载<\/a> \| <a href=\"\/4_Download\/6_O2jam_Music\/\">劲乐团歌曲<\/a> \| <a href=\"\/4_Download\/7_DJMAX_Music\/\">DJMAX歌曲<\/a> \| <a href=\"\/4_Download\/14_BMS_Music_Key\/\">BMS歌曲(有KEY音)<\/a> \| <a href=\"\/4_Download\/8_BMS_Music\/\">BMS歌曲(无KEY音)<\/a> \| <a href=\"\/9_SKIN\/\">SKIN下载<\/a> \| <a href=\"\/10_Other_Tools\/\">其他<\/a>";
	nav[2] = "站队、公会、家族信息中心";  
	nav[3] = "上传你自己制作的BMS音乐与大家分享"; 
	nav[4] = "<a href=\"\/help\/help\.htm\">使用帮助<\/a> \| SKIN制作 \| <a href=\"http://bbs.rohome.net/thread-904145-1-1.html\" target=\"_blank\">音乐制作<\/a> \| 常见问题 \| BUG反馈"; 
	nav[5] = "游戏相关问题讨论中心"; 

   document.all["nav"].innerHTML = nav[vnumber];
}