I currently have two divs on my site:

Notice that both have border [same color as the div] and they also have border radius.
I want to achieve this:

So I want them to join. How can I make this happen? If I can do it, is pure CSS and HTML enough or do I need jQuery and JS as well?
I though of making one large div of the two and then just setting a background that is similar to the two being united, but this is a not perfect for me because I have another object immediately below div 2.
So how can I do it?
Thanks in advance.
Set the divs next to each other and remove the border-radius from the big div’s top right corner and from the left side of the smaller one.
See http://jsfiddle.net/jxMW9/ for a demo.