If you’ve worked with DHTML Actions for any length of time, you will notice that any item which has an Action associated with it tends to put a “javascript:void(0)” message in the Status Bar at the bottom of your browser window when you put your cursor over it. Much like this. 

There is, however, a way to prevent this, by using another DHTML Action:

When -> Mouse -> Mouse Over Target -> (Layout Area) Message -> Window -> Set Status Bar Parameter(s) -> Values... ... and set the message you wish to appear.

Now, take a look at the status bar when you put your mouse over this link (if clicked, this will take you back to the Actions Home page).