if (document.images) {          // Active Images


    img1on = new Image();
        img1on.src = "images/on-about.gif";  
    img2on = new Image();
        img2on.src = "images/on-guides.gif";  
    img3on = new Image();
        img3on.src = "images/on-new.gif";         
    img4on = new Image();
        img4on.src = "images/on-translate.gif";          
    img5on = new Image();
        img5on.src = "images/on-learning.gif";  
    img6on = new Image();
        img6on.src = "images/on-cd.gif";  
    img7on = new Image();
        img7on.src = "images/on-free.gif";
    img8on = new Image();
        img8on.src = "images/on-contact.gif";    
    img9on = new Image();
        img9on.src = "images/on-search.gif";    
    img10on = new Image();
        img10on.src = "images/on-home.gif";    		
		
		
    img1off = new Image();
        img1off.src = "images/off-about.gif";  
    img2off = new Image();
        img2off.src = "images/off-guides.gif";  
    img3off = new Image();
        img3off.src = "images/off-new.gif";  
    img4off = new Image();
        img4off.src = "images/off-translate.gif";  
    img5off = new Image();
        img5off.src = "images/off-learning.gif";  
    img6off = new Image();
        img6off.src = "images/off-cd.gif";
    img7off = new Image();
        img7off.src = "images/off-free.gif";  
    img8off = new Image();
        img8off.src = "images/off-contact.gif"; 
    img9off = new Image();
        img9off.src = "images/off-search.gif"; 
    img10off = new Image();
        img10off.src = "images/off-home.gif"; 
}

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

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