$(document).ready(function() {
	var browserVersion =  parseInt($.browser.version);
	if($.browser.msie && browserVersion < 9) {
		var html5tags = new Array("header", "section", "article", "footer");
		for(var i = 0; i < html5tags.length; i++) {
			document.createElement(html5tags[i]);
		}
		if(browserVersion == 8) {
			$("html").addClass('ie8');
		} else if(browserVersion == 7) {
			$("html").addClass('ie7');
		} else {
			$("html").addClass('ie6');
			$("head script:last-child").after('<script src="js/libs/iepngfix/iepngfix_tilebg.js" type="text/javascript"></script>')
		}
		$(".backtotop").fadeTo(0, 0.64);
	};					   
});