$(document).ready(function() {
    $('.e-button').bind('click', function() {
        var link = $(this);
        link.attr('class', 'e-button');
    });

    $('.e-button').bind('mousedown', function() {
        var link = $(this);
        link.attr('class', 'e-button-p');
    });

    $('.e-button').bind('mouseup', function() {
        var link = $(this);
        link.attr('class', 'e-button');
    });

    $('.e-button').bind('mouseout', function() {
        var link = $(this);
        link.attr('class', 'e-button');
    });
});