JS-Jquery 同步校验两次密码是否相同

<li>
<input id="password" name="password" placeholder="请输入密码"  onfocus='passwd()'  type="password" class="free-input input-w-200 pass"  maxlength="32" />
</li>
<li>
<input id="password1" name="password1" type="password"  class="free-input input-w-200 pass"  onkeyup='validate()' placeholder="请再次输入密码" value="" />
<br>
<span id="tishi"></span>
</li>

function validate() {
var pwd1 = document.getElementById("password").value;
var pwd2 = document.getElementById("password1").value;
if(pwd1 == pwd2) {
document.getElementById("tishi").innerHTML="<font color='gray'>输入正确</font>";
/*         $("#tishi").hide(1500); */
document.getElementById("dosubmit").disabled = false;
}
else {
document.getElementById("tishi").innerHTML="<font color='red'>两次密码不相同</font>";
document.getElementById("dosubmit").disabled = true;
}
}