I have the following code from another website, its working fine there, but when I want to use it in another place I have an error about SCRIPT5009: 'swapImage' is undefined


Code:


Code:
<img width="100%" height="100%" id="mainImage" style="border: 1px solid black; border-image: none;" alt="" src="/services/PublishingImages/Slideshow/Slide1.JPG">
...