var linkContactOn = new Image();
var linkContactOff = new Image();

var linkTestimonialOn = new Image();
var linkTestimonialOff = new Image();

linkContactOn.src = '/public/imgs/services/btn-contactalyse-on.gif';
linkContactOff.src = '/public/imgs/services/btn-contactalyse-off.gif';

linkTestimonialOn.src = '/public/imgs/services/btn-testimonial-on.gif';
linkTestimonialOff.src = '/public/imgs/services/btn-testimonial-off.gif';