SO fiddle

Test Fiddle mainly for SO Questions

by Nick Craver

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/overcast/jquery-ui.css">
<div id="page-wrap"> 
    <div id="randomnumber">BIG BOY</div> 
 </div>

JavaScript

$("#randomnumber").each(function() {
     var numRand = Math.floor(Math.random()*501);
     $(this).css({'margin-left': numRand});
});