New features!

[benkrikler]

This is work in progress a bit, but for anyone using this I thought I'd shout about it...
I've added two big(ish) new functionalities:

1. You can now have values be selectable by a form style drop-down list. Just add a fourth option to the writeHtml function for a parameter which is a string specifying "select". You'll also get next and previous value buttons that you can use to just scroll through values. This is good if you really have a large list of option.
2. You can now set the page to scroll through all values automatically. Call the method makeCycleButton on a particular instance of a Parameter and give the name of a tag's id to place the button in, and a second parameter for the timer period.

I'll update the documentation properly sometime in the future, but for now, you can see a demo for this at: http://www.hep.ph.ic.ac.uk/~bek07/codersClub/plotify/demo.shtml