I've selected 96 dpi, Windows resolution. If you're creating images to be seen on the Macintosh, select 72 dpi. I've set the background to white. You can also select a web-safe color from the Custom drop down list or select Transparent which will make the background color invisible. Creating a Simple Rollover Button For openers, we'll create a Symbol.
Symbols are reusable elements that can be either graphics or buttons.
In this case we want to create a button symbol. From the Insert pull down menu, select New Symbol. The Symbol dialog will open. Down, Over While Down and Active Area. For now we are only concerned with Up and Over.