javascript multiple input textbox validation
<p>I have 'n' number of textbox on a form, after the user enters a value in a textbox, i need to validate its not a duplicate in the other textboxes.</p>

<p>Ex :  </p>

<pre><code>Textbox[0] : 1
Textbox[1] : 2 
Textbox[2] : 3
Textbox[4] : 1
</code></pre>

<p>For this example it should alert saying that '1' have entered twice.
Let me know what to be done.</p>
