// JavaScript Document
if (document.images) {            
img1on = new Image();           
img1on.src = "images/home_button_on.gif"; 
img2on = new Image();           
img2on.src = "images/client_access_button_on.gif"; 
img3on = new Image();           
img3on.src = "images/partner_access_button_on.gif"; 

img1off = new Image();           
img1off.src = "images/home_button_off.gif"; 
img2off = new Image();           
img2off.src = "images/client_access_button_off.gif"; 
img3off = new Image();           
img3off.src = "images/partner_access_button_off.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");        }}
}