<!--  Begin

if (document.images) {

    
  image1on = new Image();
  image1on.src = "./nav/heat_pumps_on.gif";
  
  image1off = new Image();
  image1off.src = "./nav/heat_pumps.gif";
   
  image2on = new Image();
  image2on.src = "./nav/furnaces_on.gif"; 
     
  image2off = new Image();
  image2off.src = "./nav/furnaces.gif"; 
  
  image3on = new Image();
  image3on.src = "./nav/boilers_on.gif";
 
  image3off = new Image();
  image3off.src = "./nav/boilers.gif";
    
  image4on = new Image();
  image4on.src = "./nav/air_conditioning_on.gif";
  
  image4off = new Image();
  image4off.src = "./nav/air_conditioning.gif";
    
  image5on = new Image();
  image5on.src = "./nav/plumbing_on.gif";
  
  image5off = new Image();
  image5off.src = "./nav/plumbing.gif";
    
  image6on = new Image();
  image6on.src = "./nav/testimonials_on.gif";
  
  image6off = new Image();
  image6off.src = "./nav/testimonials.gif";
    
  image7on = new Image();
  image7on.src = "./nav/credentials_on.gif";
  
  image7off = new Image();
  image7off.src = "./nav/credentials.gif";
    
  image8on = new Image();
  image8on.src = "./nav/services_on.gif";
  
  image8off = new Image();
  image8off.src = "./nav/services.gif";
    
  image9on = new Image();
  image9on.src = "./nav/maintenance_on.gif";
  
  image9off = new Image();
  image9off.src = "./nav/maintenance.gif";
    
  image10on = new Image();
  image10on.src = "./nav/installation_on.gif";
  
  image10off = new Image();
  image10off.src = "./nav/installation.gif";
    
  image11on = new Image();
  image11on.src = "./nav/tips_on.gif";
  
  image11off = new Image();
  image11off.src = "./nav/tips.gif";
    
  image12on = new Image();
  image12on.src = "./nav/photos_on.gif";
  
  image12off = new Image();
  image12off.src = "./nav/photos.gif";
    
  image13on = new Image();
  image13on.src = "./nav/links_on.gif";
  
  image13off = new Image();
  image13off.src = "./nav/links.gif";
    
  image14on = new Image();
  image14on.src = "./nav/community_on.gif";
  
  image14off = new Image();
  image14off.src = "./nav/community.gif";
    
  image15on = new Image();
  image15on.src = "./nav/about_us_on.gif";
  
  image15off = new Image();
  image15off.src = "./nav/about_us.gif";
    
  image16on = new Image();
  image16on.src = "./nav/contact_us_on.gif";
  
  image16off = new Image();
  image16off.src = "./nav/contact_us.gif";

}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

//  End -->