php左边分类列表显示菜单

            class="wrap">    class="leftzone">        class="modTop">class="sidetitle">商品分类        class="sidecontent">            class="my_left_category">                class="my_left_cat_list">                    class="h2_cat" onmouseover="this.className='h2_cat active_cat'" onmouseout="this.className='h2_cat'">                        
AA
                        class="h3_cat">                            class="shadow">                                class="shadow_border">                                    
                                        
a.1
                                        
a.2
                                        
a.3
                                        
a.4