javascript - Drawing rectangles with Jquery -


i have div called #llens need draw boxes ( div's). can't understand why not drawing. i'm litle newbie please patient if i'm make great mistakes :p

that's div :

  <div id="estructura" class="collapse ">     <section data-toggle="buttons-radio" class="btn-group btn-group-vertical">         <header id="professor" class="btn btn-primary boto_funcio ">              <h2>professors</h2>          </header>         <header id="alumne" class="btn btn-primary boto_funcio ">              <h2>alumnes   </h2>          </header>         <header id="text" class="btn btn-primary boto_funcio ">              <h2>text      </h2>          </header>     </section> </div> <section class="span9">     <div id="llens"></div>     <!-- llens --> </section>

here example : http://jsfiddle.net/blackersoul/plwks/

i 've done fork code there : http://jsfiddle.net/lollero/kdmqw/

sometimes html element not displayed when empty. try <div id="llens">&nbsp;</div>.


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