JavaScript - Change images with javascript

<body> <h1><a rel="nofollow" href="http://www.999tutorials.com/javascript/change-images-with-javascript/" >Change images with javascript</a></h1> <p>Change images on mouse over with javascript. Define the images and preload them. It can sometimes be a nice effect to change images when the mouse is moved over. For example if you have a file archive function and have directories, then the directory images can open when the mouse is moved over</p> <p><a href="http://www.tutcity.com/">More Tutorials</a></p> </body>