window.addEvent('domready', function(){
	
var button_img_hover = new Array();
button_img_hover['0'] = "images/puls_azienda_on_en.gif";
button_img_hover['1'] = "images/puls_prodotti_on_en.gif";
button_img_hover['2'] = "images/puls_dovesiamo_on_en.gif";
button_img_hover['3'] = "images/puls_comecontattarci_on_en.gif";
button_img_hover['4'] = "images/puls_home_on_en.gif";
button_img_hover['5'] = "images/puls_news_on.gif";

var button_img = new Array();
button_img[0] = "images/puls_azienda_off_en.gif";
button_img[1] = "images/puls_prodotti_off_en.gif";
button_img[2] = "images/puls_dovesiamo_off_en.gif";
button_img[3] = "images/puls_comecontattarci_off_en.gif";
button_img[4] = "images/puls_home_off_en.gif";
button_img[5] = "images/puls_news_off.gif";
	
	$each($$('img.button_img'),function(value, key){
		$('bottone_'+key).addEvent('mouseover',function(){
			var back_img = button_img_hover[key];
			$('bottone_'+key).setProperty('src', back_img);
		});
		$('bottone_'+key).addEvent('mouseout',function(){
			var back_img = button_img[key];
			$('bottone_'+key).setProperty('src', back_img);
		});
	});

		
});