function check(list){
		var messages = new Array();
		for (itm in list){
			condition=list[itm][0];
			message=list[itm][1];
			
			if (! condition){
				messages.push(message);
			}
		}
		if (messages.length){
			alert(messages.join("\n\n"));
			return false;
		}else{
			return true;
		}
	};