browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (browserName == "Netscape" && browserVer >= 3) version = "yes";
        else {if (browserName == "Microsoft Internet Explorer" && browserVer >= 3) version = "yes";
                  else version = "no";}
        if (version == "yes") 
        {

          overview = new Image();
          overview.src = "http://www.w3logodesign.com/img/images/en/company.gif";
          overviewa = new Image();
          overviewa.src = "http://www.w3logodesign.com/img/images/en/company1.gif";

          portfolio = new Image();        
          portfolio.src = "http://www.w3logodesign.com/img/images/en/portfolio.gif";
          portfolioa = new Image();
          portfolioa.src = "http://www.w3logodesign.com/img/images/en/portfolio1.gif";

          contact = new Image();
          contact.src = "http://www.w3logodesign.com/img/images/en/contact.gif";
          contacta = new Image();
          contacta.src = "http://www.w3logodesign.com/img/images/en/contact1.gif";

          news = new Image();
          news.src = "http://www.w3logodesign.com/img/images/en/news.gif";
          newsa = new Image();
          newsa.src = "http://www.w3logodesign.com/img/images/en/news1.gif";

          testimonials = new Image();
          testimonials.src = "http://www.w3logodesign.com/img/images/en/testimonials.gif";
          testimonialsa = new Image();
          testimonialsa.src = "http://www.w3logodesign.com/img/images/en/testimonials1.gif";

          service_overview = new Image();
          service_overview.src = "http://www.w3logodesign.com/img/images/en/service-overview.gif";
          service_overviewa = new Image();
          service_overviewa.src = "http://www.w3logodesign.com/img/images/en/service-overview1.gif";

          pricing = new Image();
          pricing.src = "http://www.w3logodesign.com/img/images/en/pricing.gif";
          pricinga = new Image();
          pricinga.src = "http://www.w3logodesign.com/img/images/en/pricing1.gif";


        }

  function displayOver(objectName) 
  {
    if (version == "yes") 
    {
      imgOn = eval(objectName + "a.src");  
      document [objectName].src = imgOn; 
    }
  }

  function displayOut(objectName) 
  {   
    if (version == "yes") 
    {
      imgOff = eval(objectName + ".src");  
      document [objectName].src = imgOff;  
    }
  }


function checkContactUs() { 

  if (!document.contactForm.get_first_name.value) {
      alert("Please fill in the 'First Name' field!");
      document.contactForm.get_first_name.focus();
      return false;
  } 

 if (!document.contactForm.get_last_name.value) {
      alert("Please fill in the 'Last Name' field!");
      document.contactForm.get_last_name.focus();
      return false;
  
  }

 if (!document.contactForm.get_email.value) {
      alert("Please fill in the 'Email' field!");
      document.contactForm.get_email.focus();
      return false;
  
  }

 if (document.contactForm.get_email.value) {

    adresse = document.contactForm.get_email.value;
    var place = adresse.indexOf("@",1);
    var point = adresse.indexOf(".",place+1);

    if ((place > -1)&&(adresse.length >2)&&(point > 1))
    {  
    
    }
      else
    {
       alert("Please, use a valid email address! ");
       document.contactForm.get_email.focus();
       return false;
    }                  
    
 }

 return true;

}

function checkRequest() {

  if (!document.requestForm.get_first_name.value) {
      alert("Please fill 'First Name' field!");
      document.requestForm.get_first_name.focus();
      return false;
  } 

 if (!document.requestForm.get_last_name.value) {
      alert("Please fill 'Last Name' field!");
      document.requestForm.get_last_name.focus();
      return false;
  
  }


 if (!document.requestForm.get_email.value) {
      alert("Please fill 'Email' field!");
      document.requestForm.get_email.focus();
      return false;
  
  }

 if (document.requestForm.get_email.value) {

    adresse = document.requestForm.get_email.value;
    var place = adresse.indexOf("@",1);
    var point = adresse.indexOf(".",place+1);

    if ((place > -1)&&(adresse.length >2)&&(point > 1))
    {  
    
    }
      else
    {
       alert('Please use valid email address');
       document.requestForm.get_email.focus();
       return false;
    }                  
    
 }

 return true;


}
function confirm_del() {
  var reply = confirm("This will permanantly delete this record! All emails will be deleted as well. You can't restore the emails in future.");

  if(reply) {
     return true;
   } else {
     return false;
   }
}