function hotelupgrade_checkbox_onclick(evt){
	hotelupgrade_set_values();
}

function hotelupgrade_set_values(){
	
	var gids = $('hotelupgrade_gid').value.split(',');
	var s = '';
	for(var i=0; i<gids.length; i++){

		var elms = document.getElementsByClassName('hotelupgrade_item_' + gids[i]);
		
		for(var j=0; j<elms.length; j++){
				
			if( elms[j].checked ){		
				s += elms[j].value + ',';
				break;
			}
		}

	}

	$('HotelUpgradeItemValues').value = s;

}

function hotelupgrade_set_eventhandlers(){

	var gids = $('hotelupgrade_gid').value.split(',');
	
	for(var i=0; i<gids.length; i++){
		var elms = document.getElementsByClassName('hotelupgrade_item_' + gids[i]);

		for(var j=0; j<elms.length; j++){
			Event.observe(elms[j], 'click', hotelupgrade_checkbox_onclick, false);
		}
	}
	
}

function hotelupgrade_initialize(){	
	hotelupgrade_set_values();
	hotelupgrade_set_eventhandlers();
}

setTimeout('hotelupgrade_initialize()', 2000);