if (document.images) {             
            
            contactinfooff = new Image();      
            contactinfooff.src = "/images/subnav/leftnav_contact-off.gif"; 
            
            contactinfoon = new Image();      
            contactinfoon.src = "/images/subnav/leftnav_contact-on.gif";
        
            
            employmentoff = new Image();      
            employmentoff.src = "/images/subnav/leftnav_employment-off.gif"; 

            employmenton = new Image();      
            employmenton.src = "/images/subnav/leftnav_employment-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");
        }
}