width off all submenu LI's jquery

Question

How can i add the total width off all submenu li's to the submenu ul?

width() method of jQuery?

<ul>
 <li>level 1</li>
 <li>
  <ul style="widht:150px;"> //total width children li / add width li's
   <li>level 2</li> //width 100
   <li>level 2</li> //width 50
  </ul>
 </li>
 <li>level 1</li>
<li>
  <ul style="widht:150px;"> //total width children li / add width li's
   <li>level 2</li> //width 100
   <li>level 2</li> //width 50
  </ul>
</li>
</ul>

Answer 1

var Peek = 0;

$('ul ul').each(function(){    
   $(this).children('li').each(function(i, e){
      if($(e).outerWidth() > Peek)
         Peek = $(e).outerWidth();
   });

   $(this).width(Peek);
   Peek = 0;
});

which would set the sub uls width to the hightest width of the list items.