A rails 2.1 friendly attribute rater?

I've got a Model with 12 statements I want to let the user rate from 1 to 6. Instead of just having them enter a value in 12 fields with the statements as labels, I want to display 12 raters (1-6 stars, responds to mouseover,click) and let the user click the image to set the value of the (hidden) field.

I'm new to rails and esp. javascript: Can anyone point me in the right direction for this?

Thanks in advance!