This is an example of Javascript. It's simple to change the text and size of the textbox whenever you wish. Have a look at the source code. If you don't know how, it's easy. From the View menu, choose Document Source in Netscape Navigator or Source in Internet Explorer. The HTML code for this page will load in your computer's text editor.
If you want to use this bit of Javascript in your own Web page, you can copy and paste the code to your hard drive. However, be sure to give credit where it is due. To Nathan Wenneker, as I happily do now.