Event.add(window, 'load', function() {

	var a = T('a', 'nav_left').concat(T('a', 'nav_right'));

	a.forEach(function(c, i) {
		var m = '/MyPortal/marketingterritoriale/media/img/tab_0' + (i+1) + '_hover.jpg';
		// g = new Image(); g.src = m;

		Dom.setStyles(c, {
			opacity: 0,
			background: 'url("' + m + '")'
		});

		Event.add(c, 'mouseover', function() {
			Morph.set({
				element: c,
				styles: {
					opacity: ['actual', 0.9]
				},
				time: 0.2
			});
		});
		Event.add(c, 'mouseout', function() {
			Morph.set({
				element: c,
				styles: {
					opacity: ['actual', 0]
				},
				time: 0.2
			});
		});
	});



});