var vs=((navigator.appVersion.charAt(0)<4)||((navigator.appName.indexOf('Netscape')<0)&&(navigator.appName.indexOf('Microsoft Internet Explorer')<0)));

function SB() {
  if (vs) {
     this.brow = null;
     this.plat = null;
     return this;
     }
   this.plat = (navigator.platform.indexOf('Mac') > -1) ? 'mac' : 'win';
   this.brow = (navigator.appName.indexOf('Microsoft') > -1) ? 'ie' : 'ns';
   return this;
  }
sb = new SB();
document.write('<LINK HREF="http://www.tollgatevacationrentals.com/css/' + sb.plat + '_' +
sb.brow + '.css" REL="styleSheet" TYPE="text/css">');