function initButton() {	
	if(document.getElementById('easyButton')) {
		var easyButton = document.getElementById('easyButton');
		easyButton.onmouseover  = swapButtonState;
		easyButton.onmouseout   = swapButtonState;
		easyButton.onclick      = handleClick;
		easyButton.style.cursor = 'pointer';
	}
}
		
function swapButtonState(evt) {
	evt = evt || event;
	var element = evt.target || evt.srcElement;
	
	if(evt.type == 'mouseover') {
		element.src = 'http://www.spirair.nl/img/air/easy_over.jpg';
	} else {
		element.src = 'http://www.spirair.nl/img/air/easy_off.jpg';
	}
}

function handleClick() {
	document.location.href = 'producten/easy-vent/eigenhuis.html';
}