var agent = navigator.userAgent.toLowerCase();
var ver = parseInt(navigator.appversion);
	if ((agent.indexOf("opera") != -1))
		document.write('<link rel="stylesheet" href="css/opera.css" type="text/css" media="screen" />');
	else if ((agent.indexOf("msie 8") != -1))
		document.write('<link rel="stylesheet" href="css/ie.css" type="text/css" media="screen" />');
	else if ((agent.indexOf("msie 7") != -1))
		document.write('<link rel="stylesheet" href="css/ie.css" type="text/css" media="screen" />');
	else if ((agent.indexOf("msie 6") != -1))
		document.write('<link rel="stylesheet" href="css/ie6.css" type="text/css" media="screen" />');
	else
		document.write('<link rel="stylesheet" href="css/styles.css" type="text/css" media="screen" />');