Have Category description and product listing next to each other

[bravo14]

Hi

This is probably just a simple CSS issue, but I can't figure it out

I want the category description on one side of the page and the product listing on the right

The page can be seen at http://www.the-flower-stall.co.uk/in...=index&cPath=1

You will see that the widths are set correct but the product listing is still underneath the description

The css I have used is:

#indexProductListCatDescription{
width:350px;
float:left;
margin:10px;
}
#productListing{
width:300px;
float:right;
}

Any help is much appreciated