ÿþvar AlphaPng = new Class({

	defaultOptions: {

		'debug': 0,

		'clearImage': '/_images/general/blank.gif',

		'backgroundTags': ['div', 'table', 'td', 'a']

	},



	initialize: function(options) {

		if (window.ie6) {

			this.setOptions(this.defaultOptions, options);



			this.fixImages();

			this.fixBackgrounds();

		}

	},



	fixImages: function() {

		if (window.ie6) {

			$ES('img[src$=png]').each(function(img) {

				img.setStyles({

					'filter': 'progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=\'true\', src=\'' + img.getProperty('src') + '\', sizingMethod=\'scale\')',

					'width': img.getProperty('width'),

					'height': img.getProperty('height')

				});

				img.setProperty('src', this.options.clearImage);

			} .bind(this));

		}

	},



	fixBackgrounds: function() {

		if (window.ie6) {

			var reBackground = new RegExp('[^\(\)"\']+\.png', 'i');

			for (var i = 0; i < document.styleSheets.length; i++) {

				for (var j = 0; j < document.styleSheets[i].rules.length; j++) {

					var background = reBackground.exec(document.styleSheets[i].rules[j].style.backgroundImage);

					if (background) {

						document.styleSheets[i].rules[j].style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=\'true\', sizingMethod=\'scale\', src=\'' + document.styleSheets[i].rules[j].style.backgroundImage + '\')';

						document.styleSheets[i].rules[j].style.backgroundImage = 'none';

					}

				}

			}



			$ES(this.options.backgroundTags.join(',')).each(function(tag) {

				if (new RegExp('\\.png["\']\\)', 'i').exec(tag.getStyle('background-image'))) {

					tag.setStyle('filter', 'progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=\'true\', sizingMethod=\'scale\', src=\'' + tag.getStyle('background-image') + '\')');

					tag.setStyle('background-image', 'none');

				}

			} .bind(this));

		}

	}

});



AlphaPng.implement(new Events, new Options);