$(document).ready(function(){  
    $(".button").hover(function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_webdesign2.png");  
            }, function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_webdesign.png");  
 });  
}); 

$(document).ready(function(){  
    $(".button2").hover(function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_programming2.png");  
            }, function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_programming.png");  
 });  
}); 

$(document).ready(function(){  
    $(".button3").hover(function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_video2.png");  
            }, function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_video.png");  
 });  
}); 

$(document).ready(function(){  
    $(".button4").hover(function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_graphic2.png");  
            }, function() {  
        $(this).attr("src","assets/templates/default/images/navigation/btn_graphic.png");  
 });  
});