function styleWriter() {
    if ((navigator.userAgent).indexOf("Safari")!=-1) 
    {
    document.write('<link href="styles/safari.css" media="screen" rel="Stylesheet" type="text/css" />')
    }
   
    else if ((navigator.appName).indexOf("Microsoft")!=-1) 
    {
    document.write('<link href="styles/ie.css" media="screen" rel="Stylesheet" type="text/css" />')
    }
    
    else if ((navigator.appName).indexOf("Opera")!=-1) 
    {
    document.write('<link href="styles/opera.css" media="screen" rel="Stylesheet" type="text/css" />')
    }
  }
styleWriter();


image1 = new Image();
image1.src = "/images/nav/about_on.jpg";

image2 = new Image();
image2.src = "/images/nav/contact_on.jpg";

image3 = new Image();
image3.src = "/images/home_on.jpg";

image4 = new Image();
image4.src = "/images/nav/portfolio_on.jpg";

image5 = new Image();
image5.src = "/images/nav/testimonials_on.jpg";