function _CF_onError(form_object, input_object, object_value, error_message)
    {
	alert(error_message);
    return false;	
    }

function _CF_hasValue(obj, obj_type)
    {
    if (obj_type == "TEXT")
	{
    	if (obj.value.length == 0) 
      		return false;
    	else 
      		return true;
    	}
	}

function  _CF_checksearchtool(_CF_this)
    {
    if  (!_CF_hasValue(_CF_this.keyword, "TEXT" )) 
        {
        if  (!_CF_onError(_CF_this, _CF_this.keyword,
_CF_this.keyword.value, "Please enter a keyword to search."))
            {
            return false; 
            }
        }
    return true;
    }