function ToggleHiddenField(control, hidden_control, pos_value, neg_value){

	var original_value;

	

	original_value = hidden_control.value

	

	if (original_value == neg_value)

		{ 	

		hidden_control.value = pos_value	

		} 

	if (original_value == pos_value)

		{ 		

		hidden_control.value = neg_value		

		} 	

	else 

		{

		// The database value is currently not set and the user has just checked the box  		

		hidden_control.value = pos_value		

		} 



	return true;

}