// roll sur bouton image
<!--   mouseover / mouseout   -->
function _bouton_go(t,n,imgAChanger){
	adr = t.getAttribute('src').substring(0,t.getAttribute('src').lastIndexOf('/')+1)
	if(n == 0){t.setAttribute('src',adr+imgAChanger)
	}else if(n == 1){t.setAttribute('src',adr+imgAChanger)
	}
}