// Extrae los valores numericos de para duraciones.

 function repladurac (str) {
    var cad = "";
    var l = str.length;
    for (var i = 0; i <= l; ++i) {
       var c = str.substr( i, 1 );
       if ( c != "-")
         cad = cad + c;
    }

    var ret = '';
    var l = cad.length;
    for (var i = 0; i <= l; ++i) {
       var c = cad.substr( i, 3 );
       if ( c == "Ene")
         ret = cad.substr( (i+3), 2 ) + '01' + cad.substr( (i-2), 2 );
       else if ( c == "Feb")
	 ret = cad.substr( (i+3), 2 ) + '02' + cad.substr( (i-2), 2 );
       else if ( c == "Mar")
	 ret = cad.substr( (i+3), 2 ) + '03' + cad.substr( (i-2), 2 );
       else if ( c == "Abr")
	 ret = cad.substr( (i+3), 2 ) + '04' + cad.substr( (i-2), 2 );
       else if ( c == "May")
	 ret = cad.substr( (i+3), 2 ) + '05' + cad.substr( (i-2), 2 );
       else if ( c == "Jun")
	 ret = cad.substr( (i+3), 2 ) + '06' + cad.substr( (i-2), 2 );
       else if ( c == "Jul")
	 ret = cad.substr( (i+3), 2 ) + '07' + cad.substr( (i-2), 2 );
       else if ( c == "Ago")
	 ret = cad.substr( (i+3), 2 ) + '08' + cad.substr( (i-2), 2 );
       else if ( c == "Sep")
	 ret = cad.substr( (i+3), 2 ) + '09' + cad.substr( (i-2), 2 );
       else if ( c == "Oct")
	 ret = cad.substr( (i+3), 2 ) + '10' + cad.substr( (i-2), 2 );
       else if ( c == "Nov")
	 ret = cad.substr( (i+3), 2 ) + '11' + cad.substr( (i-2), 2 );
       else if ( c == "Dic")
	 ret = cad.substr( (i+3), 2 ) + '12' + cad.substr( (i-2), 2 );
    }

    return (ret);
 }

 SortableTable.prototype.addSortType( "NumberF", repladurac );