function checkMulti(id,item_type,event,multi)
{
	document.getElementById('event').value = event;
	document.getElementById('id').value = id;
	document.getElementById('item_type').value = item_type;
	document.getElementById('multi_check').style.display = 'block';
	document.getElementById('multi_check').style.top = (mouseY - 250)+'px';
	document.getElementById('multi_check').style.left = (mouseX - 250)+'px';
}

function addSeat(id,item_type,event,multi)
{
	xmlhttpGet('/add_to_cart.php?item_type='+item_type+'&id='+id+'&event='+event+'&multi='+multi, 'lock_result', 'lock_result');
	document.getElementById('seat_'+id).setAttribute('class', 'map_seat sel');
	document.getElementById('seat_'+id).setAttribute('className', 'map_seat sel');
	document.getElementById('multi_check').style.display = 'none';
}

function addGA(event)
{
	var od = document.getElementById('ga_od').options[document.getElementById('ga_od').selectedIndex].value;
	var ad = document.getElementById('ga_ad').options[document.getElementById('ga_ad').selectedIndex].value;
	
	xmlhttpGet('/add_to_cart.php?item_type=GA&od='+od+'&ad='+ad+'&event='+event, 'lock_result', 'lock_result');
}