How to create a radial gradient around navigation?

Question

See the radial gradient flowing around the center of the navigation? Lets suppose

Answer 1

If you talk about the lighter brown glow that is behind the navigation you can do this with CSS3...: http://jsfiddle.net/Jg8ZC/

  background: #45392d;
  background-repeat: no-repeat;
  background-image: -webkit-radial-gradient(center center, circle contain, #624a36 0%, #45392d 80%); /* New WebKit syntax */  
  background-image: -moz-radial-gradient(center center, circle contain, #624a36 0%, #45392d 80%);  /* Firefox */  
  background-image: -ms-radial-gradient(center center, circle contain, #624a36 0%, #45392d 80%); /* IE10+ */  
  background-image: -o-radial-gradient(center center, circle contain, #624a36 0%, #45392d 80%); /* Opera (13?) */  
  background-image: radial-gradient(center center, circle contain, #624a36 0%, #45392d 80%; /* standard syntax */

This way it will work in every modern browser.