I was recently asked about techniques for creating images for button states and how to keep the button shape and text properly aligned (i.e., maintain consistent registration points) across the states to avoid any pixel shifts when the images change.
There are a few different techniques for creating button images, and the method you use depends on how you are using the button images. The traditional JavaScript method (and even some CSS-based methods) use separate images for each button state, and the CSS Sprite method uses one larger image as a background image with all of the button states in that single image then changing the position of the background image to show the different button states. You can use Adobe Fireworks to create button state images for either of these methods.



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