Redmine

function number(str, n){

  if (n <= 0) return ""; 

  else if (n > String(str).length) return str;

  else return String(str).substring(0,n);

}

function parse(object){

  var NodeList = object.getElementsByTagName('option');

  var nodes = $A(NodeList); var array = new Array();

  for (i=0; i<$(nodes).length; i++){

    array[i] = $(nodes)[i].innerHTML;

  }

  return array;

}

function del(object){

  var NodeList = object.getElementsByTagName('option'); 

  var nodes = $A(NodeList); 

  nodes.each(function(node){

    if($(node).innerHTML != '--- Выберите ---'){

      $(node).remove();

    };

  });

}

function add(object, name) {

  object.options.add(new Option(name,name,false,false));

}

Event.observe(window, 'load', function() {

  var select = $('issue_custom_field_values_13');

  var array = parse(select);

  del(select);

  Event.observe($('issue_custom_field_values_12'), 'change', function() {

    del(select);

    var block_selected = $F('issue_custom_field_values_12'); 

    for(i=0; i<array.length; i++) {

      if(number(array[i],1) == number(block_selected,1)) {

        add(select,array[i]);

      };

    };

  });

});