I have been making a basic webpage but am having lots of difficulties with rollover buttons. Despite the 2 images for my rollover being exactly the same size, when i make the button it creates a duplicate which is then placed alongside where I want the rollover to appear. This then knocks my whole layout across to the right and creates all sorts of problems when viewing in the browser.
Does anyone know what might be causing this problems or could offer any suggestions to get me back on track? Any suggestions would be greatly appreciated.
(These pictures illustrate the problems I'm having on a very basic site design and show the script involved)