Adding a png button / Link next to the adv. search on the navbar?

[treysoucie]

Id like to place a .png next to my advanced search link in my navbar. Id like it to change to a different png when i hover over it. How do I go about adding such a button to my navbar?

Ive attached a picture to show where The button should be located...

[nisarg]

b clear wat kinda png button?

[treysoucie]

it is just a button I want to place by the advanced search that will link to a different website. I also want it to have a hover code to flip to a different button when hovered over.

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is there a write up or something that could show me how to add a png or gif button to the navbar?