if (navigator.userAgent.indexOf('Mac') != -1) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/mac.css">');
			document.close();
		}
		if (navigator.userAgent.indexOf('Win') != -1) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/win.css">');
			document.close();
		}
		if (navigator.userAgent.indexOf('Mac') != -1 && navigator.appName.indexOf('Netscape') != -1 && navigator.appVersion.indexOf('4.') != -1) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/netscape.css">');
			document.close();
		}
		if (navigator.userAgent.indexOf('Gecko') != -1) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/gecko.css">');
			document.close();
		}
		if ( !(navigator.appName.indexOf('Netscape') != -1 && navigator.appVersion.indexOf('4.') != -1) ) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/form.css">');
			document.close();
		}
		if ( !(navigator.userAgent.indexOf('Mac') != -1 ) && ( ! ( navigator.appName.indexOf('Netscape') != -1 && navigator.appVersion.indexOf('4.') != -1) ) ) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/form_button.css">');
			document.close();
		}
		if (navigator.userAgent.indexOf('Gecko') != -1) {
			document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="./common/form_button.css">');
			document.close();
		}