<script type="text/javascript">
function countLines(theArea){
var theLines = theArea.value.replace((new RegExp(".{"+theArea.cols+"}","g")),"\n").split("\n");
if(theLines[theLines.length-1]=="") theLines.length--;
theArea.form.lineCount.value = theLines.length;
theArea.form.replace(/\r|\n/g, ""); 
}
</script>
</head>

<!-- wird unterhalb Form eingetragen -->
<script>
$('#scancodes').keyup(validateTextarea);
function validateTextarea() {
        var errorMsg = "Ein oder mehrere Scancodes stimmen nicht mit der Spedition ueberein!!!";
        var textarea = this;
        var pattern = new RegExp('^' + $(textarea).attr('pattern') + '$');
        // check each line of text
        $.each($(this).val().split("\n"), function () {
            // check if the line matches the pattern
            var hasError = !this.match(pattern);
            if (typeof textarea.setCustomValidity === 'function') {
                textarea.setCustomValidity(hasError ? errorMsg : '');
            } else {
                // Not supported by the browser, fallback to manual error display...
                $(textarea).toggleClass('error', !!hasError);
                $(textarea).toggleClass('ok', !hasError);
                if (hasError) {
                    $(textarea).attr('title', errorMsg);
                } else {
                    $(textarea).removeAttr('title');
                }
            }
            return !hasError;
        });
    }
</script>