function opera() {
	var useragent = navigator.userAgent;
	var BrowserName=(useragent.indexOf('Opera')>-1)?'Opera':navigator.appName;

	if (BrowserName == "Opera") {
		document.writeln('<link href="../styles/opera.css" rel="stylesheet" type="text/css" media="all" />');
	}

}

window.onload=opera();