javascript - How to "attach" an ad element to centered website? -


maybe gonna kinda stupid question, if have centered website (using fixed width + margin: 0 auto) how "attach" ad element it? (left skyscraper).

what did, , not like, have wrapper inside content , ad are. wrapper must have bigger width content (page). website not centered anymore , looks ugly when ad not displayed (when using adblock , stuff that).

is js way?

don't know mean 'attach' below how structure / build it.

   <div id="container">       <div class="column_left">i don't know using ads, place right here. image, text, ad script?</div>     <!-- place ad in above div -->       <div class="column_right">lorem ipsum dummy text of printing , typesetting industry. </div>     </div> 

css:

#container {     overflow: hidden;     margin: 0 auto;     width: 960px;     position: relative; } .column_left {     width: 200px;     float: left;     margin: 0 10px 0 0;     background-color: #f7f7f7;     border: 1px solid #f5f5f5; }  .column_right {      width: 700px;     float: left;     background: #ddd; } 

http://jsfiddle.net/jklmk/36/