//prototype.jsを使うことを前提
// enableからdisableに変更
function text_enable(form_value) {

	var form_value = form_value;
    var elements = Form.getElements('form');
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      
	  if(element.name == form_value){
	      element.disabled = false;
	  }
	  
    }
}
// disableからenableに変更
function text_disable(form_value) {
	
	var form_value = form_value;
	//配列に変更
	var form_value_array=form_value.split(",");
    var elements = Form.getElements('form');
    for (var i = 0; i < elements.length; i++) {
      var element = elements[i];
      
      for (var j = 0; j < form_value_array.length; j++) {
		  if(element.name == form_value_array[j]){
		      element.disabled = true;
		  }
      }
	  
    }
}