/**
* @version		$Id: modal.js 5263 2006-10-02 01:25:24Z webImagery $
* @copyright	Copyright (C) 2005 - 2008 Open Source Matters. All rights reserved.
* @license		GNU/GPL, see LICENSE.php
* Joomla! is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/

/**
 * JCaption javascript behavior
 *
 * Used for displaying image captions
 *
 * @package		Joomla
 * @since		1.5
 * @version     1.0
 */
var JCaption = new Class({
	initialize: function(selector)
	{
		this.selector = selector;

		var images = $$(selector);
		images.each(function(image){ this.createCaption(image); }, this);
	},

	createCaption: function(element)
	{
		var caption   = document.createTextNode(element.title);
		var container = document.createElement("div");
		var text      = document.createElement("p");
		var width     = element.getAttribute("width");
		var align     = element.getAttribute("align");

		if(!width) {
			width = element.width;
		}

		text.appendChild(caption);
		element.parentNode.insertBefore(container, element);
		container.appendChild(element);
		if ( element.title != "" ) {
			container.appendChild(text);
		}
		container.className   = this.selector.replace('.', '_');
		container.className   = container.className + " " + align;
		container.setAttribute("style","float:"+align);
		container.style.width = width + "px";

	}
});

document.caption = null
window.addEvent('load', function() {
  var caption = new JCaption('img.caption')
  document.caption = caption
});

//ロールオーバー
function initRollovers() {
	if (!document.getElementById) return
	
	var aPreLoad = new Array();
	var sTempSrc;
	var aImages = document.getElementsByTagName('img');

	for (var i = 0; i < aImages.length; i++) {		
		if (aImages[i].className == 'imgover') {
			var src = aImages[i].getAttribute('src');
			var ftype = src.substring(src.lastIndexOf('.'), src.length);
			var hsrc = src.replace(ftype, '_o'+ftype);

			aImages[i].setAttribute('hsrc', hsrc);
			
			aPreLoad[i] = new Image();
			aPreLoad[i].src = hsrc;
			
			aImages[i].onmouseover = function() {
				sTempSrc = this.getAttribute('src');
				this.setAttribute('src', this.getAttribute('hsrc'));
			}	
			
			aImages[i].onmouseout = function() {
				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
				this.setAttribute('src', sTempSrc);
			}
		}
	}
}

window.onload = initRollovers;