title: How to enable local javascript to read/write files on my PC?
body: <p>Since Greasemonkey can't read/write files from a local hard disk, I've heard people suggesting Google gears but I've no idea about gears.</p>
  
  <p>So, I've decided to add a</p>
  
  <pre><code>&lt;script type="text/javascript" src="file:///c:/test.js"&gt;/script&gt;
  </code></pre>
  
  <p>Now, this test will use FileSystemObject to read/write file. Since, the <code>file:///c:/test.js</code> is a javascript file from local hard disk, it should probably be able to read/write file on my local hard disk. </p>
  
  <p>I tried it but Firefox prevented the <code>file:///c:/test.js</code> script to read/write files from the local disk. :(</p>
  
  <p>Is there any setting in Firefox's <code>about:config</code> where we can specify to let a particular script, say from localfile or xyz.com, to have read/write permission on my local disk files?</p>