jQuery.fn.supersleight = function(settings) {
		settings = jQuery.extend({
			imgs: true,
			backgrounds: true,
			shim: 'x.gif',
			apply_positioning: true
		}, settings);
		
		return this.each(function(){
			if (jQuery.browser.msie && parseInt(jQuery.browser.version) < 7 && parseInt(jQuery.browser.version) > 4) {
				jQuery(this).find('*').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);
					};
					// image elements
					if (settings.imgs && self.is('img[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('src', settings.shim);
					};
					// apply position to 'active' elements
					if (settings.applyPositioning && self.is('a, input') && self.css('position') === ''){
						self.css('position', 'relative');
					};
				});
			};
		});
};