i1= new Image(); i1.src = "_img/butoane/ajutor_rol.jpg";
i2= new Image(); i2.src = "_img/butoane/comerciant_rol.jpg";
i3= new Image(); i3.src = "_img/butoane/contact_rol.jpg";
i4= new Image(); i4.src = "_img/butoane/prima_pagina_rol.jpg";