var menu_uruchom =   function(){

$$('div.element_menu').each(function(el){
 //   el.addEvent("mouseover", function(){el.setStyle("background-color","#b7b7b7");});
 //   el.addEvent("mouseout",  function(){el.setStyle("background-color","");});
    el.addEvent("click", function(){ window.location.href=$(el).id+".php"; });
});

}