i want to make a rollover where the original button is a yellow star with writing on it (it's for an appeal) and the rollover will be the same star with a corona effect to highlight it.
on the page it is going on to it is not possible to place it in a place where the background is a single flat colour so it needs transparency - however .gif and .png-8 destroy the corona effect and .png-24 is a LARGE file what would be the best way around this (if there is a way...)
I predominantly use fireworks so not sure if I can help.
Are you trying to get the corona effect to have the detail of the page below to show through? I think this is impossible with GIFs - as you know they dont have the depth of tranparecy but they will irradicate your file size issue. If you could harness glow around the star but not worry too much about the back ground showing through you could use the alpha channel and a rollover.
Could you incorporate the background into the image? - as though you had sliced it. That way there would be no need for transparency and you could add as little or as much colourful corona as you wanted.
Actually I thought that if the background you were using was fixed positionally under you star then you could use it as the background for your images in their 'rollover' and 'off' states. I guess the simplest way would be to screen capture the section of background and paste it as you background in PS and then add the corona.
Of course this is totally dependant on the layout of your content - IE. is is fluid or fixed. But if you could fix only the background around your image and have the rest of the page fluid...?