This is a series of form checking functions. This will allow you to set your form fields to request only numbers, request only text, request input, eliminate spaces, and/or create all caps. It gets a little tricky as you must go into the script and "turn on" the functions you want. The author has been very nice in offering instructions right in the script on how each is to be activated.
You're going to have to download this one and try it yourself. If I put it here, I either fill up my mail box or get a lot of errors.
Please note: This script is being offered in simple text format. When you click to Grab the Script, the text should display. Internet Explorer and AOL users may get a blank page or the script may run and produce the effect. If this happens, choose SAVE AS from the FILE menu and save the blank or compiled page.