function getCSS() {
	var isNav, isIE, bVer;
	//alert(navigator.appName);
	//alert(navigator.appVersion.charAt(0));
	bVer = parseInt(navigator.appVersion.charAt(0));
	if (parseInt(navigator.appVersion.charAt(0)) >= 4) {
	  isNav = (navigator.appName == "Netscape") ? true : false;
	  isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;
  	  isMac = (navigator.platform == "MacPPC") ? true : false;
	}
	if (isNav == true) {
	  if (isMac == true) {
		document.write("<link rel=\"STYLESHEET\" type=\"text/css\" href=\"/css/ff_style.css\">");
			// alert('Firefox Style');
	  }
	  else if (bVer > 4) {
	    document.write("<link rel=\"STYLESHEET\" type=\"text/css\" href=\"/css/ff_style.css\">");
			// alert('Firefox Style');
	  }
	  else {
	    document.write("<link rel=\"STYLESHEET\" type=\"text/css\" href=\"/css/ff_style.css\">");
			// alert('Firefox Style');
	  }
	}
	else if (isIE) {
	  document.write("<link rel=\"STYLESHEET\" type=\"text/css\" href=\"/css/ie_style.css\">");
			// alert('IE Style');
	}
}