var i10=new Image(); i10.src="images/boton10.jpg";
var i11=new Image(); i11.src="images/boton11.jpg";
var i20=new Image(); i20.src="images/boton20.jpg";
var i21=new Image(); i21.src="images/boton21.jpg";
var i30=new Image(); i30.src="images/boton30.jpg";
var i31=new Image(); i31.src="images/boton31.jpg";
var i40=new Image(); i40.src="images/boton40.jpg";
var i41=new Image(); i41.src="images/boton41.jpg";
var i50=new Image(); i50.src="images/boton50.jpg";
var i51=new Image(); i51.src="images/boton51.jpg";
var i60=new Image(); i60.src="images/boton60.jpg";
var i61=new Image(); i61.src="images/boton61.jpg";
function Normal(nombreImg){var img=eval(nombreImg +"0.src");document[nombreImg].src=img;}
function Iluminar(nombreImg)
  {
    var img=eval(nombreImg +"1.src");
	document[nombreImg].src=img;
  }	 

	 function B4over()
         {
         capa3.style.visibility= "visible"
         }                
     function B4out()
         {
         capa3.style.visibility= "hidden"
          }
     function B5over()
         {
         capa4.style.visibility= "visible"
         }
     function B5out()
         {
         capa4.style.visibility= "hidden"
         }


 function B41over()
          {
           B41.bgColor="#2D2D2D"
           capa3.style.visibility= "visible"
           }
 function B41out()
          {
           B41.bgColor="#000000"
           capa3.style.visibility= "hidden"
           }
 function B42over()
          {
           B42.bgColor="#2D2D2D"
           capa3.style.visibility= "visible"
           }
 function B42out()
          {
           B42.bgColor="#000000"
           capa3.style.visibility= "hidden"
           }
 function B43over()
          {
           B43.bgColor="#2D2D2D"
           capa3.style.visibility= "visible"
           }
 function B43out()
          {
           B43.bgColor="#000000"
           capa3.style.visibility= "hidden"
           }
		   
 function B51over()
          {
           B51.bgColor="#2D2D2D"
           capa4.style.visibility= "visible"
           }
 function B51out()
          {
           B51.bgColor="#000000"
           capa4.style.visibility= "hidden"
           }
 function B52over()
          {
           B52.bgColor="#2D2D2D"
           capa4.style.visibility= "visible"
           }
 function B52out()
          {
           B52.bgColor="#000000"
           capa4.style.visibility= "hidden"
           }
 function B53over()
          {
           B53.bgColor="#2D2D2D"
           capa4.style.visibility= "visible"
           }
 function B53out()
          {
           B53.bgColor="#000000"
           capa4.style.visibility= "hidden"
           }