правильная разметка

Код (PHP):

1. (function($){
2.     $.fn.extend({
3.         leanModal:function(_1){
4.             var _2={
5.                 top:150,
6.                 overlay:0.8
7.             };
8.             
9.             _1=$.extend(_2,_1);
10.             return this.each(function(){
11.                 var o=_1;
12.                 $(this).click(function(e){
13.                     var _3=$("<div id='lean_overlay'></div>");
14.                     var _4=$(this).attr("href");
15.                     $("body").append(_3);
16.                     $("#lean_overlay").click(function(){
17.                         _5(_4);
18.                     });
19.                     var _6=$(_4).outerHeight();
20.                     var _7=$(_4).outerWidth();
21.                     $("#lean_overlay").css({
22.                         "display":"block",
23.                         opacity:0
24.                     });
25.                     $("#lean_overlay").fadeTo(200,o.overlay);
26.                     $(_4).css({
27.                         "display":"block",
28.                         "position":"fixed",
29.                         opacity:0,
30.                         "z-index":11000,
31.                         "left":50+"%",
32.                         "margin-left":-(_7/2)+"px",
33.                         "top":o.top+"px"
34.                         });
35.                     $(_4).fadeTo(200,1);
36.                     e.preventDefault();
37.                 });
38.             });
39.             function _5(_8){
40.                 $("#lean_overlay").fadeOut(200);
41.                 $(_8).css({
42.                     "display":"none"
43.                 });
44.             };
45.     }
46.     });
47. })(jQuery);