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" || obj_type == "PASSWORD")
	{
    	if (obj.value.length == 0)
      		return false;
    	else
      		return true;
    	}
    else if (obj_type == "SELECT")
	{
        for (i=0; i < obj.length; i++)
	    	{
		if (obj.options[i].selected)
			return true;
		}

       	return false;
	}
    else if (obj_type == "SINGLE_VALUE_RADIO" || obj_type == "SINGLE_VALUE_CHECKBOX")
	{

		if (obj.checked)
			return true;
		else
       		return false;
	}
    else if (obj_type == "RADIO" || obj_type == "CHECKBOX")
	{

        for (i=0; i < obj.length; i++)
	    	{
		if (obj[i].checked)
			return true;
		}

       	return false;
	}
	}


function  _CF_checkemail_form(_CF_this)

    {

    if  (!_CF_hasValue(_CF_this.email_address, "TEXT" ))

        {

        if  (!_CF_onError(_CF_this, _CF_this.email_address, _CF_this.email_address.value, "Please enter your email address"))

            {

            return false;

            }

        }


    return true;

    }