<!-- Hide from older browsers 
// PRELOADING IMAGES

if (document.images) {     
var first_off = new Image();     
var first_on = new Image();     
}     
    
function loadImages() {     
if (document.images) {     
first_off.src = "images/dr-bobs-choc.png";     
first_on.src = "images/dr-bobs-choc-on.png";     
}     
} 

if (document.images) {
function activate(imgName) {    
if ( eval(imgName + "_on.complete") ) {    
document.images[imgName].src = eval( imgName + "_on.src" );    
}    
}    
}

if (document.images) {
function deactivate(imgName) {    
if ( eval(imgName + "_off.complete") ) {    
document.images[imgName].src = eval( imgName + "_off.src" );    
}    
}
}
// End script hiding -->