if (document.images) {             
            
            profileoff = new Image();      
            profileoff.src = "/images/nav-profile-off.gif"; 
            
            profileon = new Image();      
            profileon.src = "/images/nav-profile-on.gif";
        
            
            constructionoff = new Image();      
            constructionoff.src = "/images/nav-construction-off.gif"; 

            constructionon = new Image();      
            constructionon.src = "/images/nav-construction-on.gif";
        
            
            equipmentoff = new Image();      
            equipmentoff.src = "/images/nav-equipment-off.gif"; 

            equipmenton = new Image();      
            equipmenton.src = "/images/nav-equipment-on.gif";            

            contactoff = new Image();      
            contactoff.src = "/images/nav-contact-off.gif"; 

            contacton = new Image();      
            contacton.src = "/images/nav-contact-on.gif";
            
            homeoff = new Image();      
            homeoff.src = "/images/nav-home-off.gif"; 

            homeon = new Image();      
            homeon.src = "/images/nav-home-on.gif";
                    
            profile2off = new Image();      
            profile2off.src = "/images/nav-profile-off.gif"; 
            
            profile2on = new Image();      
            profile2on.src = "/images/nav-profile-on.gif";
        
            
            construction2off = new Image();      
            construction2off.src = "/images/nav-construction-off.gif"; 

            construction2on = new Image();      
            construction2on.src = "/images/nav-construction-on.gif";
        
            
            equipment2off = new Image();      
            equipment2off.src = "/images/nav-equipment-off.gif"; 

            equipment2on = new Image();      
            equipment2on.src = "/images/nav-equipment-on.gif";            

            contact2off = new Image();      
            contact2off.src = "/images/nav-contact-off.gif"; 

            contact2on = new Image();      
            contact2on.src = "/images/nav-contact-on.gif";
            
            home2off = new Image();      
            home2off.src = "/images/nav-home-off.gif"; 

            home2on = new Image();      
            home2on.src = "/images/nav-home-on.gif";
        
        
        
		}

// Function to 'activate' /images.
function imgOn(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "on.src");
        }
}

// Function to 'deactivate' /images.
function imgOff(imgName) {
        if (document.images) {
            document[imgName].src = eval(imgName + "off.src");
        }
}