RegEx replace. UNTESTED.
string.replace(/\<(\/)*pre\>/g,"") when the page loads (or can be done server-side.. probably easier)
inputID.value = "<pre>" + inputID.value + "</pre>"
If anyone knows of a website that can offer ColdFusion help that isn't controlled by neurotic, pedantic jerks* (stackoverflow.com), please PM me with a link.
* The neurotic, pedantic jerks are not the owners; just the people who are in control of the "popularity contest".