Space for comments on a html website

Hello,
I have a form that will allow visitors to my site to post comments but I’m wondering how to make the comments already entered are displayed on the same page.
example:
<a href="#write-comment" title="Laissez votre commentaire !" class="code middle-button" style="margin:28px 0px 0px 4px;"><span class="middle-right"></span>Commentez</a>
<div style="display: none;">
<div id="write-comment" class="popup-comment">
<h1 style="margin-left:16px; padding-top:16px;">Laissez votre avis</h1>
<form action="#">
<fieldset><input name="Name" type="text" value="Nom:" onfocus="if(this.value=='Nom:')this.value='';" onblur= "if(this.value=='')this.value='Name:';"/></fieldset>
<fieldset><input name="Mail" type="text" value="E-Mail:" onfocus="if(this.value=='E-Mail:')this.value='';" onblur= "if(this.value=='')this.value='E-Mail:';"/></fieldset>
<fieldset><input name="Web" type="text" value="Occupation:" onfocus="if(this.value=='Occupation:')this.value='';" onblur= "if(this.value=='')this.value='Web:';"/></fieldset>
<fieldset><textarea name="Message" onfocus="if(this.value=='Message:')this.value='';" onblur= "if(this.value=='')this.value='Message:';">Message:</textarea></fieldset>
<fieldset><input type="submit" value="Envoyer" /></fieldset>
</form>
Answer #1
Surely that would be controlled by PHP… sure the message box might be in html, but the whole process and comments would most likely be controlled with PHP coding.
Answer #2
Why not utilize something already readily available and used by many?
www.disqus.com
Answer #3
Hello, thanks for replies.
I saw how “DISQUS” works, but it’s possible to help me with throught my way ?