function right(e) {
 if (navigator.appName == 'Netscape' && (e.which == 3 || e.which == 2))
  return false;
 else if (navigator.appName == 'Microsoft Internet Explorer' && (event.button == 2 || event.button == 3)) {
  alert('Acción deshabilitada. Pulsa aceptar para continuar.');
  return false;
 }
 return true;
}
document.onmousedown=right;
document.onmouseup=right;
if (document.layers) window.captureEvents(Event.MOUSEDOWN);
if (document.layers) window.captureEvents(Event.MOUSEUP);
window.onmousedown=right;
window.onmouseup=right;


var bt1new,bt1tmp,bt2new,bt2tmp,bt3new,bt3tmp;
function changeImage(oldimg,newimg,temp)
{
	return true;
}
function restoreImage(oldimg,temp)
{
	return true;
}
bt1new=new Image(76,30);
bt1new.src="../imagen/control1b.gif";
bt1tmp=new Image(76,30);

bt2new=new Image(76,30);
bt2new.src="../imagen/control2b.gif";
bt2tmp=new Image(76,30);

bt3new=new Image(76,30);
bt3new.src="../imagen/control3b.gif";
bt3tmp=new Image(76,30);

function changeImage(oldimg,newimg,temp)
  {	temp.src=oldimg.src;
	  	oldimg.src=newimg.src;  }
function restoreImage(oldimg,temp){
	oldimg.src=temp.src;
}