Event.observe(window, 'load', function() {
    
    Event.observe('boxLink1', 'mouseover', function(){
        $('brainLogo').src = "images/aivologo_1.png";
    });
    
    Event.observe('boxLink1', 'mouseout', function(){
        $('brainLogo').src = "images/aivologo_0.png";
    });
    
    Event.observe('boxLink2', 'mouseover', function(){
        $('brainLogo').src = "images/aivologo_2.png";
    });
    
    Event.observe('boxLink2', 'mouseout', function(){
        $('brainLogo').src = "images/aivologo_0.png";
    });
    
    Event.observe('boxLink3', 'mouseover', function(){
        $('brainLogo').src = "images/aivologo_3.png";
    });
    
    Event.observe('boxLink3', 'mouseout', function(){
        $('brainLogo').src = "images/aivologo_0.png";
    });
    
    Event.observe('boxLink4', 'mouseover', function(){
      $('brainLogo').src = "images/aivologo_4.png";
    });
            
    Event.observe('boxLink4', 'mouseout', function(){
        $('brainLogo').src = "images/aivologo_0.png";
    });
    
    Event.observe('boxLink5', 'mouseover', function(){
        $('brainLogo').src = "images/aivologo_5.png";
    });
    
    Event.observe('boxLink5', 'mouseout', function(){
        $('brainLogo').src = "images/aivologo_0.png";
    });
});