Image Background Problem

I have an jpg for a GUITexture Button. The button Works ,but the image looks wrong.

Its an arrow and has a white box around the image. How can i get rid of the white box?

Try to edit this image in any image editor that supports layers. The fastest way to solve the problem: cut your button from image and insert it in a new file that doesn't have any background and save as .tga, .psd or another extension, that supports layers.

Or you can add alpha layer to your image. But do it only if you know how to work with alpha layers.