<div>
<div class="content wysiwyg-content">
There are few navigation items on the home page.<br />
Upon a click - A panel slides into place in the content area beneath the<br />
nav, each panel contains different content, pulled from various content<br />
types on the site.<br />
each panel has a left arrow graphic and a close X graphic, clicking on<br />
the left arrow slides the panel out of site, &nbsp;it does NOT slide a new panel<br />
in. clicking on the upper right X graphic closes/hides the panel, no<br />
sliding.the URL of the panel needs to change when the panel changes.<br />
&nbsp; <br />
I have no clue of how to start with. Can you help me get started with it?<br />
I would really appreciate your help.
</div>
</div>


There are few navigation items on the home page.
Upon a click - A panel slides into place in the content area beneath the
nav, each panel contains different content, pulled from various content
types on the site.
each panel has a left arrow graphic and a close X graphic, clicking on
the left arrow slides the panel out of site,  it does NOT slide a new panel
in. clicking on the upper right X graphic closes/hides the panel, no
sliding.the URL of the panel needs to change when the panel changes.
  
I have no clue of how to start with. Can you help me get started with it?
I would really appreciate your help.

creating sliding panels in php

PHP is a widely-used server-side scripting language especially suited for web development, powering tens of millions of sites from Facebook to personal WordPress blogs. PHP is often paired with the MySQL relational database, but includes support for most other mainstream databases. By utilizing different Server APIs, PHP can work on many different web servers as a server-side scripting language.

Web development includes all aspects of presenting content on intranets and the Internet, including delivery development, protocols, languages and standards, server software, browser clients, databases and multimedia generation.

Web Development

Drupal is an open-source content-management framework written in PHP used as a back-end framework for websites and is also used for knowledge management and business collaboration. The standard release of Drupal contains basic features common to content management systems, including user account registration and maintenance, menu management, RSS feeds, taxonomy, page layout customization, and system administration. Drupal runs on any computing platform that supports both a Web server capable of running PHP and a database to store content and configuration.