if (navigator.platform.indexOf('Win') > -1) {
	if (navigator.appName.indexOf('Netscape') > -1) {
		//alert("Dose Navigator");
		document.write('<LINK HREF="css/spstyle_ns.css" REL="styleSheet" TYPE="text/css">');
	} else {
		//alert("NICHT Dose Navigator");
		document.write('<LINK HREF="css/spstyle.css" REL="styleSheet" TYPE="text/css">');
	}
} else {
	//alert("NICHT Dose Navigator");
	document.write('<LINK HREF="css/spstyle.css" REL="styleSheet" TYPE="text/css">');
}