Hyperlinks are easy!
!) Insert a picture into your message
2) Select it (click on it)
3) Click on the hyperlink button () in the toobar
4) Either type or paste in the URL (here is the litterbox url I copied for you)
5) Click on insert. If you have a picture selected, then you will have a choice to have a border or not. They can seem a little distracting, but on the other hand some people might not know that your image is a link unless they see the border!
6) OR if you want a work or sentence then type your phrase Litter Box
7) Select it (highlight it)
8) Click on the hyperlink icon
9) Type or paste your url
10) The hyperlink will not function until after you send the message. If the image does have a border, and your script does have an underline than you can guess it probably worked.
Now that you see how easy it is to put any kind of link behind something, I think for security you should know how to check it out. On any picture, image, link or whatever you can always right click on it and select properties. The original URL will be shown to you.