function b() {
            var txtbody = $(window.frames['FreeTextBox1_designEditor'].document).find('body').html();
            var bytelen = 0;
            var i;
            for (i = 0; i < txtbody.length; i++) {
                charCode = txtbody.charCodeAt(i);
                if (charCode < 0x007f) {
                    bytelen += 1;
                } else if ((0x0080 <= charCode) && (charCode <= 0x07ff)) {
                    bytelen += 2;
                } else if ((0x0800 <= charCode) && (charCode <= 0xffff)) {
                    bytelen += 3;
                }
            }
            alert(bytelen);
        }