Remove GIF image background to match Original background in GWT?

So I have an image (GIF) with a blueish background and a circle (which i want to keep), I would like to r开发者_如何学JAVAemove the blueish background and ( or show the origin color of the back ground it sites on or make the background of the image totally transparent. )

Thank you .

This is GWT 1.6

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GIF supports transparency also, open it in a image editor(not paint, it sucks) and select the background using the magic wand tool. Press delete and you're done!

PS: save it as GIF file if you have to..

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This has nothing to do with GWT. The solution is to use PNG image format. PNGs allow you to specify a transparent background.