split div into 2 columns

1<div id="content">
2  <div id="left">
3     <div id="object1">some stuff</div>
4     <div id="object2">some more stuff</div>
5  </div>
6
7  <div id="right">
8     <div id="object3">unas cosas</div>
9     <div id="object4">mas cosas para ti</div>
10  </div>
11</div>
12