  <!--
   function popup (URL, p01)
   { 
	var pagina= 'visor.htm'+'?foto='+URL+'&texto='+p01;
	window.open(pagina,"ventana1","width=335, height=550, scrollbars=no, menubar=no, location=no, resizable=no") 
   }

   function popupH (URL, p01)
   { 
	var pagina= 'visor.htm'+'?foto='+URL+'&texto='+p01;
	window.open(pagina,"ventana1","width=500, height=400, scrollbars=no, menubar=no, location=no, resizable=no") 
   }

   function bigPopup (URL)
   { 
	window.open(URL,"ventana1","width=600, height=600, scrollbars=no, menubar=no, location=no, resizable=yes") 
   }

   function obtener_valor(variable) 
   { 
    //-- definición de variables:
    var variable_may = variable.toUpperCase();
    var variable_pos = url.indexOf(variable_may);
    
    //-- localizamos el valor:
    if (variable_pos != -1) 
    {
     var pos_separador = url.indexOf("&", variable_pos);
     if (pos_separador != -1) 
     {
      return url.substring(variable_pos + variable_may.length + 1, pos_separador);
     } 
      else
      {
       return url.substring(variable_pos + variable_may.length + 1, url.length);
      }
    } 
    else 
    {
     return "NO_ENCONTRADO";
    }
 }


   function MM_preloadImages()
   {
    if (document.images)
    {
     var imgFiles = MM_preloadImages.arguments;
     if (document.preloadArray==null) document.preloadArray = new Array();
     var i = document.preloadArray.length;
     with (document) for (var j=0; j<imgFiles.length; j++) if (imgFiles[j].charAt(0)!="#")
     {
      preloadArray[i] = new Image;
      preloadArray[i++].src = imgFiles[j];
     }
    }
   }

   function MM_swapImgRestore()
   {
    if (document.MM_swapImgData != null)
     for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
      document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
   }

   function MM_swapImage() 
   {
    var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.MM_swapImgData;
    for (i=0; i < (MM_swapImage.arguments.length-2); i+=3)
    {
     objStr = MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
     if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
        (objStr.indexOf('document.all[')   ==0 && document.all   ==null))
      objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
     obj = eval(objStr);
     if (obj != null)
     {
      swapArray[j++] = obj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
      obj.src = MM_swapImage.arguments[i+2];
     }
    }
    document.MM_swapImgData = swapArray; //used for restore 
   }

   function abreVentana(pag,nom,w,h,scroll)
   {
    var win = null;
    leftPosition = (screen.width) ? (screen.width-w)/2 : 0;
    topPosition = (screen.height) ? (screen.height-h)/2 : 0;
    settings = 'height='+h+',width='+w+',top='+topPosition+',left='+leftPosition+',scrollbars='+scroll+',resizable'
    win = window.open(pag,nom,settings)
   }
  //-->