If you chose to have Dreamweaver preload the rollover images, then you will see the HTML code in the body of your document (indicated in yellow) to call the preload script so that your images load more quickly.
onload="MM_preloadImages('shasta2.jpg')" Dreamweaver also adds all the code for your image and links it (if you included a URL). The rollover portion is added to the anchor tag as onmouseover and onmouseout attributes (in green).
onmouseout="MM_swapImgRestore()" onmouseover="MM_swapImage('Image1','','shasta1.jpg',1)"


