Why don’t the button work?

Why don’t the button work?

BY 03 Mar 2018 Web Application Development

In index.html there are 

    <script type=”text/javascript” src=”./lib/tau/mobile/js/tau.js”></script>
    <link rel=”stylesheet”  href=”./lib/tau/mobile/theme/default/tau.css”>
 
and signUpForm.html has those codes too.
<script type=”text/javascript” src=”./lib/tau/mobile/js/tau.js”></script>
    <link rel=”stylesheet”  href=”./lib/tau/mobile/theme/default/tau.css”>
 
If I annotate TAU in index. signUpForm.html’s buttons work well.
If both of files have TAU, signUpForm.html’s function don’t work…
What is the problem…????
 
You can try this project.
 
http://oneshottenkill.tistory.com/181
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