var $openFlag = 0;
var $BoxId = "toCust";
var $HeadId = "toCustHead";

function showBox() {
	if ($openFlag != 0) {
		document.getElementById($HeadId).className = "off";
		document.getElementById($BoxId).style.display = "none";
		$openFlag = 0;
	} else {
		document.getElementById($HeadId).className = "on";
		document.getElementById($BoxId).style.display = "block";
		$openFlag = 1;
	}
}