Problems with background-image

[ChaosKnight]

Why doesn't this background image show up in Firefox and Google Chrome, but it does in Internet Explorer and Opera?:

#nav {
  margin: 0px;
  padding: 0px;
  border: 0px;
  height: 35px;
  width: 780px;
  background-image: url(images/navbar_bg.png);
  background-repeat: no-repeat;
}

 

Any ideas?

[ChaosKnight]

I solved it, I only missed a clear: left