Hi I have been trying to do this for what feels like all my life I have a list menu with block display links, each link has a sliding doors png background image. I have used this javascript (http://www.ideashower.com/our_solutions/png-hover/) to implement the alphaimageloader fix for ie6 using a transparent gif. When I test it for the first time it works but if I click to a different page and then click back it doesn't work anymore - the menu completely disappears, I can get it to work again by duplicating the transparent gif and changing it's name, but again if I go to another page and then come back to it, it stops working and the menu dissappears. Is this a server caching issue or something like that. Any thoughts on this would be much appreciated! Thanks