How to do a showcase like youjoomla templates showcase
 

Joomla Templates Showcase
how to do a showcase like this page,which module or component?
thanks for any idea.

You can create this in Dreamweaver and then copy and paste the Dreamweaver code into a custom html mod in Joomla.

do you mean wrap a html page in joomla's articles,yes dreamweaver can do it,but if so ,why we use joomla?
i know there are some portifilo extensions can do it,but i want to know how youjoomla do it.

Actually no, what I meant was copy and paste the Dreamweaver code into a Joomla article. You can quite easily incorporate and make Dreamweaver and Joomla work together very nicely but I am speaking as a developer.
There are tables you can use to get this same effect from your Joomla editor - JCE especially.

Maybe one for the "I wish" section.
:)