How to insert new HTML code into existing page?
<p>imagine you have simple page like this:</p>

<p>Hi everybody.
when you 
<strong>click here</strong>
new text will be inserted.</p>

<p>after click :</p>

<p>Hi everybody.
when you 
"ulala ... I am inserted text"
new text will be inserted.</p>

<ol>
<li>is it possible to insert this text using PHP or Javascript?</li>
<li>If only javascript is appropriate may you provide a sample code?</li>
</ol>

<p>thanx a lot</p>
