javascript - Unexpected Token < ... cant find issue -

i getting "unexpected token <" error following javascript...

<script type="text/javascript">     function toggle_menu(id) {        var e = document.getelementbyid(id);        if(e.style.display == 'block')           e.style.display = 'none';        else           e.style.display = 'block';     } </script> 

the "<" used designate javascript. i've checked stackoverflow, , see posts suggest following ... none address code nor address problem (so no, not duplicate post)

1. changing type "text/javascript" "text/html" ... makes script stop working.
2. i've seen recommendations add <script><![cdata[ /* code here */ ]]></script> ... cdata info made script stop working again.
3. i've seen recommendations remove excess ";" ... didn't fix error.
4. remove comment tags (um... there none)
5. mixing parenthesis (none see)

this simple javascript, , don't see error coming from.

some more clarification.

• the javascript not in own file. @ top of page.
• there no javascript above code (or js files being called before code).

• here content of html tag (stack overflow wont let me type in html tag ...

  xmlns="http://www.w3.org/1999/xhtml" lang="en-us" 

• below html calling toggle...

  <a href="javascript:void(0)" onclick="toggle_menu('popup-1');"> open window </a> 

(note: javascript works, want rid of error)

your code valid if it's in html document. if it's in javascript file (eg: file.js) don't need include <script> tag.

the <script> tag used in html documents include javascript code within html.

the leading character of <script> tag (<) confusing javascript parser, , causing error.