<!-- Begin to hide script contents from old browsers.
var appVersionLower = navigator.appVersion.toLowerCase();
var iePos = appVersionLower.indexOf('msie');
if( iePos != -1 ) {
    versionMinor = parseFloat( appVersionLower.substring(iePos+5, appVersionLower.indexOf(';',iePos)) );
    versionMajor = parseInt( versionMinor );
} else {
	versionMajor = parseInt( navigator.appVersion );
	versionMinor = parseFloat( navigator.appVersion );
}
var NS   = (navigator.appName == "Netscape") ? (true) : (false);
var NS4  = (NS && (versionMajor >= 4)) ? (true) : (false);
var IE   = (navigator.appName == "Microsoft Internet Explorer") ? (true) : (false);
var IE4  = (IE && (versionMajor >= 4)) ? (true) : (false);
var IE5  = (document.all && document.getElementById) ? true : false;
var IE55 = (IE && versionMinor >= 5.5);
var MAC  = navigator.appVersion.indexOf("Macintosh") != -1;


function isNumeric( formName ) {
    var charDetected = 0, markDetected = 0, dotCount = 0;
    var numeric = formName.value;
    if( numeric == null || numeric == "" || numeric.length == 0 ) {
        return( false );
    }
    for( var i = 0; i < numeric.length; i++ ) {
      thischar = numeric.charAt( i );
      if( !((thischar >= '0') && (thischar <= '9')) ) {
        return( false );
        }
    } //end of for
    return( true );
}

function isValidNumeric( formName, minimum, maximum ) {
    var numeric = formName.value;
    if( isNumeric( formName ) == false ) {
        alert( "반드시 숫자만을 입력하셔야 합니다." );
        return( false );
    }
    var quantity = parseInt( numeric, 10 );
    if( minimum == -1 || maximum == -1 ) //range not defined
        return( true );
    if( (quantity < minimum) || (quantity > maximum) ) {
        alert( "최소 (" + minimum + ") 부터 최대 (" + maximum + ") 까지 가능합니다. 다시 입력해 주십시오.");
        return( false );
    }
    return( true );
}