JQuery spinner not working

Question

I'm attempting to utilize Jquery spinner but it doesn't seem to be working.

Here is the Documentation: Jquery Spinner Doc

Here is my javascript:

$('.riskFrequencyDropDown').spinner({max: 100, min: -100});

I am using jquery-ui-1.7.2 and its working fine for dragging. I have no idea why this is not working and any help would be much appreciated.

thanks in advance,

Shawn