This is a great DHTML script that rotates and displays any number of messages, with a unique dissolving effect applied during each rotation. The effect is archived by first positioning a semi transparent, 'spotty' image behind the message, and performing a 'wipe' action over it (see documentation inside script). As seen below, the result is nothing short of spectacular...

Note that this script requires that the text to be displayed be absolutely positioned on the page. In plain English, that means you'll need to specify exactly a left and top coordinate (relative to the page) when defining where the text should appear.