function checkNumber(mytd, j, className) {
	if (className.toUpperCase() === "#E52728") {
		className = "map_red";
	} else {
		className = "map_blue";
	}
	if (mytd.className.toUpperCase() === className.toUpperCase()) {
		mytd.className = "";
		mytd.innerHTML = " ";
	} else {
		mytd.className = className;
		mytd.innerHTML = j;
	}
}