y5.require('Dom', 'Classes', function(){
var img = new Image();
img.src = '/i/join.png';

var cable = y5.Dom.getDescendant(y5.Dom.getElementByClass('cable'), 'img');
var btn = y5.Dom.getElementByClass('connect');
var connect_img = y5.Dom.getDescendant(btn, 'img');

y5.Events.observe('mouseover', function(){
    connect_img.src = '/i/join.png';
    cable.style.display = 'none';
}, y5.Dom.getDescendant(btn, 'a'), true);

y5.Events.observe('mouseout', function(){
    connect_img.src = '/i/join_default.png';
    cable.style.display = '';
}, y5.Dom.getDescendant(btn, 'a'), true);

})