ShareĐăng ký nick có khoảng trắng

<form action="main.php?id=reg" method="post"><div class="a">Nick: <input name="nick" size="10" class="text"{% if api.r.get('nick') %} value="{{api.r.get('nick')}}"{% endif %} id="nick"></div><div class="a">Pass: <input type="pass" size="5" class="text"{% if api.r.get('pass') %} value="{{api.r.get('pass')}}"{% endif %}> </div> <div class="a">Giới tính: <select name="sex"><option value="1">Nam</option> <option value="2">Nữ</option></select> </div> <div class="a">Xem Hình ảnh: <select name="image"> <option value="on">Có</option> <option value="off">Không</option> </select> </div> <div class="a">Mã Ntc: <img src="users-captcha.php" alt="Captcha" maxlength="6"></div><div class="a">Nhập mã: <input name="captcha" size="7" class="text"></div> <div class="a"><input type="submit" value="Đăng ký" class="submit" name="register"onclick="document.getElementById('nick').value=document.getElementById('nick').value.replace(/ /gi, ' ')"></div></form>