// rollovers.js

<!--



        if (document.images) {            // Active Images

			
            img1on = new Image(); 
            img1on.src = "images/navigation/aboutmercury-roll.gif";  
            img2on = new Image(); 
            img2on.src = "images/navigation/contacts-roll.gif";  

            img1off = new Image(); 
            img1off.src = "images/navigation/aboutmercury.gif";  
            img2off = new Image(); 
            img2off.src = "images/navigation/contacts.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");
        }
}


//-->