how to check html tags and the replace content between those tags?
<p>Here is my code: <a href="http://jsfiddle.net/zEXrq/8/" rel="nofollow">http://jsfiddle.net/zEXrq/8/</a></p>

<p>Also I need to check <code>&lt;li&gt;</code> tag and <code>&lt;h3&gt;</code> tags.</p>

<p>Is it possible to check other words into those tags like <code>&lt;a onclick="word_desc(23); classChange(1, 1);" id="txtid1" class="sel25"&gt;user key&lt;/a&gt;</code> - here I want to replace only "user key", but when I put "a" to replace all "a" words including <code>&lt;a&gt;</code> tag and other words inside  tags are replaced. How to solve this?</p>
