jQuery.fn.supersleight = function(settings) {
	settings = jQuery.extend({
		imgs: true,
		backgrounds: true,
		shim: './images/spacer.gif',
		apply_positioning: true
	}, settings);
	
	return this.each(function(){
		if (jQuery.browser.msie && parseInt(jQuery.browser.version, 10) < 7 && parseInt(jQuery.browser.version, 10) > 4) {
			jQuery(this).find('*').andSelf().each(function(i,obj) {
				var self = jQuery(obj);
				// background pngs
				if (settings.backgrounds && self.css('background-image').match(/\.png/i) !== null) {
					var bg = self.css('background-image');
					var src = bg.substring(5,bg.length-2);
					var mode = (self.css('background-repeat') == 'no-repeat' ? 'crop' : 'scale');
					var styles = {
						'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='" + mode + "')",
						'background-image': 'url('+settings.shim+')'
					};
					self.css(styles);
					self.attr('supersleight-bg-applied', 'true'); // THIS LINE ADDED BY N ROHLER 8-1-09, TO ENABLE THE UNDO FUNCTION ADDED BELOW...
				};
				// image elements
				if (settings.imgs && (self.is('img[src$=png]') || self.is('input[src$=png]'))){
					var styles = {
						'width': self.width() + 'px',
						'height': self.height() + 'px',
						'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + self.attr('src') + "', sizingMethod='scale')"
					};
					self.css(styles).attr('real_src', self.attr('src')).attr('src', settings.shim);
				};
				// apply position to 'active' elements
				if (settings.apply_positioning && self.is('input') && (self.css('position') === '' || self.css('position') == 'static')){
					self.css('position', 'relative');
				};
			});
		};
	});
};

// THIS UNDO FUNCTION ADDED 8-1-09 TO UNDO THE BACKGROUND PNGS
jQuery.fn.supersleightUndo = function() {
	return this.each(function(){
		if (jQuery.browser.msie && parseInt(jQuery.browser.version, 10) < 7 && parseInt(jQuery.browser.version, 10) > 4) {
			jQuery(this).find('[supersleight-bg-applied=true]').andSelf().each(function(i,obj) {
				var self = jQuery(obj);
				// undo the bg pngs
				var styles = {
					'filter': '',
					'background-image': ''
				};
				self.css(styles);
				self.attr('supersleight-bg-applied', 'false');
			});
		};
	});
};