<!--
    
  charge ('left_arrow','../images/left_arrow.gif');
  charge ('left_arrow1','../images/left_arrow1.gif');
  
  charge ('right_arrow','../images/right_arrow.gif');
  charge ('right_arrow1','../images/right_arrow1.gif');
  
  charge ('cross','../images/cross.gif');
  charge ('cross1','../images/cross1.gif');
  
  charge ('flag_ca','images/flag_ca.gif');
  charge ('flag_ca1','images/flag_ca1.gif');
  
  charge ('flag_es','images/flag_es.gif');
  charge ('flag_es1','images/flag_es1.gif');
  
  charge ('flag_en','images/flag_en.gif');
  charge ('flag_en1','images/flag_en1.gif');
       
  function charge (nameobject, rutaImagen){
    eval (nameobject +' = new Image()');
    eval (nameobject +'.src = "' + rutaImagen + '"');
  }
     
  function change_image(nameimage,nameobject){
    document.images[nameobject].src = eval (nameimage+'.src');
  }
  
  function open_window(open_image){
    window.open(open_image,'zoom_page',"Menubar=NO,Resizable=YES,Scrollbars=YES,Toolbar=NO,Fullscreen=YES");
  }
  
  function close_window(){
    window.close();
  }
   
 -->