function callback_hide_general_messages ( arg_error_div_id )
{
	if ( typeof arg_error_div_id == 'undefined' ||  arg_error_div_id == '' )
	{
		alert ( "Developer's Error:  You must pass an error_div_id into callback_hide_general_messages.js" );
	}
	
	$(arg_error_div_id).innerHTML = '';
	$(arg_error_div_id).style.display = 'none';
}