/**
 * jQuery (PNG Fix) v1.2
 * Microsoft Internet Explorer 24bit PNG Fix
 *
 * Note: Slightly modified by Vincent on 2009-01-22
 *
 * The MIT License
 *
 * Copyright (c) 2007 Paul Campbell (pauljamescampbell.co.uk)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @param		Object
 * @return		Array
 */

(function($) {
	$.fn.pngfix = function(options) {
		// Review the Microsoft IE developer library about AlphaImageLoader
		// http://msdn2.microsoft.com/en-us/library/ms532969(VS.85).aspx

		// ECMA scope fix
		var elements 	= this;
		var settings 	= $.extend({
			imageFixSrc: 	false,
			sizingMethod: 	false
		}, options);

		if (!$.browser.msie || ($.browser.msie &&  $.browser.version >= 7)) {
			return(elements);
		}

		function setFilter(el, path, mode) {
			var fs = el.attr('filters');
			var alpha = 'DXImageTransform.Microsoft.AlphaImageLoader';
			if (fs[alpha]) {
				fs[alpha].enabled = true;
				fs[alpha].src = path;
				fs[alpha].sizingMethod = mode;
			} else {
                var filter = 'progid:' + alpha
                           + '(enabled="true", sizingMethod="'
                           + mode + '", src="' + path + '")';
				el.css('filter', filter);
			}
		}

		function setDOMElementWidth(el) {
			if (el.css('width') == 'auto' & el.css('height') == 'auto') {
				el.css('width', el.attr('offsetWidth') + 'px');
			}
		}

		return(
			elements.each(function() {
				// Scope
				var el = $(this);

				if (el.attr('tagName').toUpperCase() == 'IMG'
                   && (/\.png/i).test(el.attr('src'))) {
					if (!settings.imageFixSrc) {

						// Wrap the <img> in a <span> then apply style/filters,
						// removing the <img> tag from the final render
						el.wrap('<span></span>');
						var par = el.parent();
						par.css({
							height: 	el.height(),
							width: 		el.width(),
							display: 	'inline-block'
						});
						setFilter(par, el.attr('src'), 'scale');
						el.remove();
					} else if ((/\.gif/i).test(settings.imageFixSrc)) {

						// Replace the current image with a transparent GIF
						// and apply the filter to the background of the
						// <img> tag (not the preferred route)
						setDOMElementWidth(el);
						setFilter(el, el.attr('src'), 'image');
						el.attr('src', settings.imageFixSrc);
					}
				} else {
					var bg = new String(el.css('backgroundImage'));
					var matches = bg.match(/^url\("(.*)"\)$/);
					if (matches && matches.length) {
						// Elements with a PNG as a backgroundImage have the
						// filter applied with a sizing method relevant to the
						// background repeat type
						setDOMElementWidth(el);
						el.css('backgroundImage', 'none');

						// Restrict scaling methods to valid MSDN defintions
						var sc = 'crop';
						if (settings.sizingMethod) {
							sc = settings.sizingMethod;
						}
						setFilter(el, matches[1], sc);

						// Fix IE peek-a-boo bug for internal links
						// within that DOM element
						el.find('a').each(function() {
							$(this).css('position', 'relative');
						});
					}
				}
			})
		);
	}
})(jQuery)

$(document).ready(function() {
    $(".pngfix").pngfix();
});