This is a plugin for Intellij IDEA 8, which provides support of coldfusion markup language. You can download it from http://plugins.intellij.net/plugin/?id=3571
If attribute has some predefined values, you'll have them in completion list. For example cfqueryparam has cfsqltype which is always one of a set of possible values.
All functionality, which helps you to work with functions now available for variables inside the file. Auto completion, go to definition, usage highlighting