// テキストフィールドに連動するcheckboxとradio
function interlock() {
  $A(arguments).each(function(id){
    var text = $('text_' + id);
    var box = $(id);
    box.onclick = function () {
      var text = $('text_' + this.id);
      text.style.color = this.checked ? '#333' : '#CCC';
      if(this.checked) { text.focus(); }
      else { text.blur(); }
    }
    text.onfocus = function () {
      var box = $(this.id.replace(/text_/, ''));
      this.style.color = '#333';
      box.checked = true;
    }
    text.onblur = function () {
        this.style.color = '#333';
    }
    text.onchange = function () {
      var box = $(this.id.replace(/text_/, ''));
    }
    text.onchange();
  });
}

function IsArray(array)
{
  return !(
    !array || 
    (!array.length || array.length == 0) || 
    typeof array !== 'object' || 
    !array.constructor || 
    array.nodeType || 
    array.item 
  );
}