Your directory structure doesn't match what I have and I don't have a plugin.js file either.
I have specialchar > dialogs > specialchar.js
Is this the same file?
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.