issue occured with radio button when using prototype.js

[Jason1989]

I want to use the simplest radio button, for example, the gender selection, if I write a pure one in the pure html, it's totally fine, after I selected one gender, even if I click on the same gender, it won't cancel my selection, but if I put the codes under prototype.js, one issue will occur.

After I selected one gender, I click one the same gender, you can see that my selection has been canceled, but actually the value is the same.

[fntz]

Could you provide the code with this trouble?

[Jason1989]

Sorry it was my fault, sorry for taking your time.