Form Select - Switching Files

[windows]

I have a number of javascript files that create buttons to add tags into templates. What I want is to be easily able to switch between them using a drop down list, but I don't know how. <br /><br />This is how I want it to work<br /><br />The drop down menu contains a list of the javascript files and when I click one, it loads without me having to reload the page and that way I can easily switch between the files.<br /><br />I hope it is clear how I want it to work ?<!--content-->