<?php

			$effected_id="main-menu";

		  	$filetpl="<a href='\$href' target='\$target'>\$label</a>";

		  	$foldertpl="<a href='\$href' target='\$target' class='dropdown-toggle' data-toggle='dropdown'>\$label <b class='caret'></b></a>";

		  	$ul_class="dropdown-menu" ;

		  	$li_class="" ;

		  	$style="nav";

		  	$showlevel=6;

		  	$dropdown='dropdown';

		  	echo sp_get_menu("main",$effected_id,$filetpl,$foldertpl,$ul_class,$li_class,$style,$showlevel,$dropdown);

		?>

function sp_get_menu($id="main",$effected_id="mainmenu",$filetpl="<span class='file'>\$label</span>",$foldertpl="<span class='folder'>\$label</span>",$ul_class="" ,$li_class="" ,$style="filetree",$showlevel=6,$dropdown='hasChild'){

	$navs=F("site_nav_".$id);

	if(empty($navs)){

		$navs=_sp_get_menu_datas($id);

	}

	import("Tree");

	$tree = new \Tree();

	$tree->init($navs);

	return $tree->get_treeview_menu(0,$effected_id, $filetpl, $foldertpl,  $showlevel,$ul_class,$li_class,  $style,  1, FALSE, $dropdown);

}

function _sp_get_menu_datas($id){

	$nav_obj= M("Nav");

	$oldid=$id;

	$id= intval($id);

	$id = empty($id)?"main":$id;

	if($id=="main"){

		$navcat_obj= M("NavCat");

		$main=$navcat_obj->where("active=1")->find(); //挑选出主菜单

		$id=$main['navcid'];

	}

	if(empty($id)){

		return array();

	}

        ......

}