if ((navigator.appName == "Microsoft Internet Explorer") &&	(parseInt(navigator.appVersion)	>= 4 )){

	if((navigator.appVersion.indexOf("Macintosh"))!= -1) {

		document.write('<link rel="stylesheet"	href="css/styles_mac.css" type="text/css"/>')

	} else {

		document.write('<link rel="stylesheet" href="css/styles.css" type="text/css"/>');

	}

} else 

	if ((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 4)){

		if((navigator.appVersion.indexOf("Macintosh"))!= -1){

			document.write('<link rel="stylesheet" href="css/styles_mac_ns.css" type="text/css"/>')

		} else {

			document.write('<link rel="stylesheet" href="css/styles_ns.css" type="text/css"/>');

		}

	} else {

		document.write('<link rel="stylesheet" href="css/styles.css" type="text/css"/>')

}















function MM_reloadPage(init) {  //reloads the window if Nav4 resized

  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {

    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}

  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();

}

MM_reloadPage(true);



<!--
function MM_openBrWindow(theURL,winName,features) { //v2.0
window.open(theURL,winName,features);
}