var handlePrevButtonState = function(type, args) {

    var enabling = args[0];
    var leftImage = args[1];
    if(enabling) {
        leftImage.src = "uploads/jmtimg/left-enabled.png";    
    } else {
        leftImage.src = "uploads/jmtimg/left-disabled.png";    
    }
    
};

var handleNextButtonState = function(type, args) {

    var enabling = args[0];
    var rightImage = args[1];
    
    if(enabling) {
        rightImage.src = "uploads/jmtimg/right-enabled.png";
    } else {
        rightImage.src = "uploads/jmtimg/right-disabled.png";
    }
    
};