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# YUI Library Examples: Container Family: Skinning a Panel with Custom CSS: Advanced

# Container Family: Skinning a Panel with Custom CSS: Advanced

In this example, we move beyond the basic skinning steps demonstrated in the introductory skinning example and show more advanced techniques with multiple styled Panel Control instances on the same page. Use the buttons below to show and hide the styled panels.

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## Skinning Panel: Beyond the Basics

Panels can be skinned using only CSS, and a bit of extra markup. In the previous Skinning Tutorial, we covered the basics of skinning Panels using CSS.

In this tutorial, we will create two Panels — one skinned to look like a Windows XP window, and one that looks like the Mac OS X Aqua style. First, let's look at the markup structure that will serve as the framework for our newly skinned Panels. You'll notice that a few additional elements have been added to the header and footer. The classes of these elements — "tl", "tr", "br" and "bl" — represent each of the corner images that will be applied to the XP skin. The Aqua skin will be built from script (not based on existing markup) using the same structure, although the rounded corners will only be applied to the top corners. The script and markup for the two skinned Panels are listed below:

YAHOO.example.container.panel2.setHeader("<div class='tl'></div><span>Panel #2 from Script</span><div class='tr'></div>"); YAHOO.example.container.panel2.setBody("This is a dynamically generated Panel."); YAHOO.example.container.panel2.setFooter("<span>End of Panel #2</span>"); <div id="panel1"> <div class="hd"><div class="tl"></div><span>Panel #1 from Markup</span><div class="tr"></div></div> <div class="bd">This is a Panel that was marked up in the document.</div> <div class="ft"><div class="bl"></div><span>End of Panel #1</span><div class="br"></div></div> </div>

The skinning of these Panels is achieved using CSS definitions. As with the basic skinning example, we'll start with `container/assets/container-core.css` as our base set of CSS rules, instead of `container/assets/skins/sam/container.css`, so that we don't have to reset the additional style properties which are applied to implement Sam Skin.

In this tutorial, we will use id selectors in our CSS definitions to specify which Panel should receive each skin. Most of the styles consist of background images that are applied to various pieces of the Panels. The styles are defined below:

### XP Panel Skin CSS

/* XP Panel Skin CSS */ /* Skin default elements */ #panel1_c.yui-panel-container.shadow .underlay { left:3px; right:-3px; top:3px; bottom:-3px; position:absolute; background-color:#000; opacity:0.12; filter:alpha(opacity=12); } /* Apply the border to the right side */ #panel1.yui-panel { border:none; overflow:visible; background:transparent url(assets/img/xp-brdr-rt.gif) no-repeat top right; } /* Style the close icon */ #panel1.yui-panel .container-close { position:absolute; top:5px; right:8px; height:21px; width:21px; background:url(assets/img/xp-close.gif) no-repeat; } /* Style the header with its associated corners */ #panel1.yui-panel .hd { padding:0; border:none; background:url(assets/img/xp-hd.gif) repeat-x; color:#FFF; height:30px; margin-left:8px; margin-right:8px; text-align:left; vertical-align:middle; overflow:visible; } /* Style the body with the left border */ #panel1.yui-panel .bd { overflow:hidden; padding:10px; border:none; background:#FFF url(assets/img/xp-brdr-lt.gif) repeat-y; margin:0 4px 0 0; } /* Style the footer with the bottom corner images */ #panel1.yui-panel .ft { background:url(assets/img/xp-ft.gif) repeat-x; font-size:11px; height:26px; padding:0px 10px; border:none } /* Skin custom elements */ #panel1.yui-panel .hd span { line-height:30px; vertical-align:middle; font-weight:bold; } #panel1.yui-panel .hd .tl { width:8px; height:29px; top:1px; left:0; background:url(assets/img/xp-tl.gif) no-repeat; position:absolute; } #panel1.yui-panel .hd .tr { width:8px; height:29px; top:1px; right:0; background:url(assets/img/xp-tr.gif) no-repeat; position:absolute; } #panel1.yui-panel .ft span { line-height:22px; vertical-align:middle; } #panel1.yui-panel .ft .bl { width:8px; height:26px; bottom:0; left:0; background:url(assets/img/xp-bl.gif) no-repeat; position:absolute; } #panel1.yui-panel .ft .br { width:8px; height:26px; bottom:0; right:0; background:url(assets/img/xp-br.gif) no-repeat; position:absolute; }

### Aqua Panel Skin CSS

/* Aqua Panel Skin CSS */ /* Skin default Panel elements */ #panel2_c.yui-panel-container.shadow .underlay { position:absolute; background-color:#000; opacity:0.12; filter:alpha(opacity=12); left:3px; right:-3px; bottom:-3px; top:3px; } #panel2.yui-panel { border:none; overflow:visible; background-color:transparent; } /* Apply styles to the close icon to anchor it to the left side of the header */ #panel2.yui-panel .container-close { position:absolute; top:3px; left:4px; height:18px; width:17px; background:url(assets/img/aqua-hd-close.gif) no-repeat; } /* span:hover not supported on IE6 */ #panel2.yui-panel .container-close:hover { background:url(assets/img/aqua-hd-close-over.gif) no-repeat; } /* Style the header and apply the rounded corners, center the text */ #panel2.yui-panel .hd { padding:0; border:none; background:url(assets/img/aqua-hd-bg.gif) repeat-x; color:#000; height:22px; margin-left:7px; margin-right:7px; text-align:center; overflow:visible; } /* Style the body and footer */ #panel2.yui-panel .bd { overflow:hidden; padding:4px; border:1px solid #aeaeae; background-color:#FFF; } #panel2.yui-panel .ft { font-size:75%; color:#666; padding:2px; overflow:hidden; border:1px solid #aeaeae; border-top:none; background-color:#dfdfdf; } /* Skin custom elements */ #panel2.yui-panel .hd span { vertical-align:middle; line-height:22px; font-weight:bold; } #panel2.yui-panel .hd .tl { width:7px; height:22px; top:0; left:0; background:url(assets/img/aqua-hd-lt.gif) no-repeat; position:absolute; } #panel2.yui-panel .hd .tr { width:7px; height:22px; top:0; right:0; background:url(assets/img/aqua-hd-rt.gif) no-repeat; position:absolute; }

## Configuration for This Example

You can load the necessary JavaScript and CSS for this example from Yahoo's servers. Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured.

### Container Family Examples:

- The Module Control
- Creating and Positioning an Overlay
- Simple Tooltip Example
- One Tooltip, Many Context Elements
- Simple Panel Example
- Skinning a Panel with Custom CSS: Introduction
- Skinning a Panel with Custom CSS: Advanced
- Creating a Modal "Loading" Panel
- Creating a Resizable Panel
- Dialog Quickstart Example
- SimpleDialog Quickstart Example
- Using ContainerEffect Transitions
- Using the Overlay Manager to Manage Multiple Panels
- Implementing Container Keyboard Shortcuts with KeyListener
- Using the Button ARIA Plugin (included with examples for Button Control)
- Using the Container ARIA Plugin
- Using A Menu Button To Replace A <select> Element (included with examples for Button Control)
- Replacing the content of a Button's Menu (included with examples for Button Control)
- Example of Color Picker Built in a Dialog via JavaScript (included with examples for Color Picker Control)
- Layout inside a resizable Panel (included with examples for Layout Manager)
- Editor in a Dialog Control (included with examples for Rich Text Editor)
- Menu Buttons (included with examples for Button Control)
- Popup Calendar - Advanced (included with examples for Calendar Control)
- Showing, Hiding, and Reordering Columns. (included with examples for DataTable Control)
- Split Buttons (included with examples for Button Control)
- Simple Calendar Menu Button (included with examples for Button Control)
- Calendar Menu Button with Date on Button Face (included with examples for Button Control)
- Color Picker Button (included with examples for Button Control)
- Fixed Width Menu Button (included with examples for Button Control)
- OS-Style Programs Menu (included with examples for Menu Family)
- Application Menubar (included with examples for Menu Family)
- Slider Button (included with examples for Button Control)
- Complex Application (included with examples for Layout Manager)

### More Container Family Resources:

- User's Guide (external)
- API Documentation
- Cheat Sheet PDF (external)

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