i am looking for a javascript script that i can use on my wallpaper website which shows a message or some words and loads them letter by letter like a silent radio. if found some scripts but nothing like what i want.

for example lets say i have this sentence:

Today's News - Today we made a available a new wallpaper for your computer desktop that you can download for free from wallpaperama!!

so i want the message to run across the website.

the closest i have found is a script like this:

does anyone can help me figure the code