function rtrim(val) {
	return val.replace(/\s+$/, "");
}

function inputNum(){  // 숫자만 입력 받습니다.  onkeypress="inputNum()"
	if ((event.keyCode<48)||(event.keyCode>57)) event.returnValue=false;
}

function inputNotSC(){ // 특수문자를 받지 않습니다. onkeypress="inputNotSC()"
	if ((event.keyCode >= 33 && event.keyCode <= 47) || (event.keyCode >= 58 && event.keyCode <= 64) || (event.keyCode >= 91 && event.keyCode <= 96) || (event.keyCode >= 123 && event.keyCode <= 126)) event.returnValue=false;
}

function getIDNum(val) {
	return val.substring(val.length-3);
}
 
function menuOver(obj) {
	obj.src = getOverImgName(obj.src);
}
 
function menuOut(obj) {
	obj.src = getOutImgName(obj.src);
}
 
function getOverImgName(url) {
	url = getOutImgName(url);
	var loc = url.lastIndexOf('.');
	return url.substring(0, loc) + '_on' + url.substring(loc);
}
 
function getOutImgName(url) {
	return url.replace('_on', '');
}