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# YUI Library Examples: Button Control: Glowing Button

# Button Control: Glowing Button

This example demonstrates how to skin a Button instance to create a glossy, glass-like effect with a glowing background reminiscent of Aqua buttons found in Mac OS X.

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Skinning the Button widget is done using CSS. The stylesheet used for other Button examples is a minified version of the button-core.css and button-skin.css files. When customizing the Button skin, use the raw source files as a reference.

The button-core.css file includes foundational styling that clears the default padding, margins and borders for the `<button>` element as wells as normalizes its display type, whereas the button-skin.css file is used to apply colors, background images, etc. Skinning can be accomplished by either overriding the styles defined in the button-skin.css file, or by creating an entirely new skin file. When overriding styles, place them in a separate file to simplify integrating with YUI updates. The follow example illustrates how to create a new style for a Button instance from scratch.

Begin by creating a new Button instance.

var oButton = new YAHOO.widget.Button({ id: "ok-button", label: "OK", container: "buttoncontainer" });

Next, add style definitions for borders, background colors, and apply a transparent background to the Button's root element.

.yui-button { border-width: 1px 0; border-style: solid; border-color: #004d89; margin: auto .25em; /* Give the Button instance a transparent background image that provides a glossy, glass-like look. Since the background image is transparent, it can apply the glass effect the Button instance regardless of its background color. */ background: url(../button/assets/gloss.png) repeat-x left center; } .ie6 { /* Make background image transparent IE 6 using the AlphaImageLoader. */ background-image: none; filter: progid:DXImageTransform.Microsoft.AlphaImageLoader(src='../button/assets/gloss.png', sizingMethod = 'scale'); } .yui-button .first-child { border-width: 0 1px; border-style: solid; border-color: #004d89; margin: 0 -1px; /* The following is necessary to get negative margins working in IE.s */ *position: relative; *left: -1px; } .yui-button button, .yui-button a { padding: 0 10px; font-size: 93%; /* 12px */ line-height: 2; /* ~24px */ *line-height: 1.7; /* For IE */ min-height: 2em; /* For Gecko */ *min-height: auto; /* For IE */ color: #fff; border: solid 1px #599acd; } .yui-button#ok-button { background-color: #004d89; }

Lastly, utilize the ColorAnim utility to animate the Button instance's background color.

/* Begin animating the Button instance's background color once it is appended to its containing element. */ oButton.on("appendTo", function () { /* Apply a special CSS class to be able to target IE 6 specifically in the CSS. */ if (YAHOO.env.ua.ie == 6) { oButton.addClass("ie6"); } // Create a new ColorAnim instance var oButtonAnim = new YAHOO.util.ColorAnim("ok-button", { backgroundColor: { to: "#b1ddff" } }); /* Restart the color animation each time the target color has been applied. */ oButtonAnim.onComplete.subscribe(function () { this.attributes.backgroundColor.to = (this.attributes.backgroundColor.to == "#b1ddff") ? "#016bbd" : "#b1ddff"; this.animate(); }); oButtonAnim.animate(); });

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### Button Control Examples:

- Push Buttons
- Link Buttons
- Checkbox Buttons
- Radio Buttons
- Submit Buttons
- Reset Buttons
- Menu Buttons
- Split Buttons
- Calendar Menu Button
- Calendar Split Button
- Color Picker Button
- Fixed Width Menu Button
- Glowing Button
- Slider Button
- Getting CSS Style Sheets (included with examples for Get Utility)

### More Button Control Resources:

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

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