$(document).ready(function(){	
	var isIE = ($.browser.msie && parseInt($.browser.version.substr(0,1)) < 8);
	if (isIE) {
		$(".nav_number").fixPNG();
	}
});



$.fn.fixPNG = function() {
		return this.each(function () {
			var image = $(this).css('backgroundImage');

			if (image.match(/^url\(["']?(.*\.png)["']?\)$/i)) {
				image = RegExp.$1;
				$(this).css({
					'backgroundImage': 'none',
					'filter': "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=" + ($(this).css('backgroundRepeat') == 'no-repeat' ? 'crop' : 'scale') + ", src='" + image + "')"
				}).each(function () {
					var position = $(this).css('position');
					//if (position != 'absolute' && position != 'relative')
					//	$(this).css('position', 'relative');
				});
			}
		});
	};