$(document).ready(function(){

 var new_map='<span class="map"><span class="s1" /><span class="s2" /><span class="s3" /><span class="s4" /><span class="s5" /><span class="s6" /><span class="s7" /><span class="s8" /><span class="s9" /></span>';
 var new_bg=$("<span>");
 new_bg.addClass("bg");
 $("#w li a").append(new_map);
 $("#w li a").append(new_bg);

});