Troubling Button

Hello!

Several of my buttons are not functioning properly. I have used the following
code below:
Function Image56_onclick()
ChangeForm(Form3)
End Function

When I click the button, the form does not change. I am unsure whether it is a bug, but regardless, I am unsure how to fix the button so that the form will change.

I appreciate any advice or help.

Thanks in advance!

Are there any messages in the Chrome Debugger?