Setting up Maxlength for TEXTAREA

TYPE : 1

<script type="text/javascript" language="javascript">
 function SetMaxLength(Object, MaxLen) {
            return (Object.value.length <= MaxLen);
        }
</script>


<textarea rows="10" cols="80" id="txtNotes" style="resize: none" onkeypress="return SetMaxLength(this, 15);"></textarea>

//style="resize: none" will make textarea fixed size
-----------------------------------------------------

TYPE : 2


function textLimit(field, maxlen) {
            if (field.value.length > maxlen) {
                while (field.value.length > maxlen) {
                    field.value = field.value.replace(/.$/, '');
                }
                alert('Maximum limit exceeded!');
            }
        }


<textarea rows="10" cols="80" id="txtNotes" style="resize: none" onkeypress="textLimit(this,20)"></textarea>