@pivot
At the top of the ‘footer-default.php’ file you have a section of code that looks like this…
<div class="hidden">
<div id="LoginPopup">
<form class="loginForm" id="popupLoginForm" method="post" action="<?php echo wp_login_url(); // optional redirect: wp_login_url('/redirect/url/'); ?>">
<div id="loginBg"><div id="loginBgGraphic"></div></div>
<div class="loginContainer">
<h3>Sign in to your account</h3>
<fieldset class="formContent">
<legend>Account Login</legend>
<div class="fieldContainer">
<label for="ModalUsername">Username</label>
<input id="ModalUsername" name="log" type="text" class="textInput" />
</div>
<div class="fieldContainer">
<label for="ModalPassword">Password</label>
<input id="ModalPassword" name="pwd" type="password" class="textInput" />
</div>
</fieldset>
</div>
<p class="formContent">
<button type="submit" class="btn signInButton"><span>Sign in</span></button>
</p>
<div class="hr"></div>
<p class="formContent">
<a href="<?php bloginfo('wpurl') ?>/wp-login.php?action=lostpassword" id="popupLoginForgotPswd">Forgot your password?</a>
</p>
</form>
</div>
</div>
To add the Remember Me option replace the above block of code with this…
<div class="hidden">
<div id="LoginPopup">
<form class="loginForm" id="popupLoginForm" method="post" action="<?php echo wp_login_url(); // optional redirect: wp_login_url('/redirect/url/'); ?>">
<div id="loginBg"><div id="loginBgGraphic"></div></div>
<div class="loginContainer">
<h3>Sign in to your account</h3>
<fieldset class="formContent">
<legend>Account Login</legend>
<div class="fieldContainer">
<label for="ModalUsername">Username</label>
<input id="ModalUsername" name="log" type="text" class="textInput" />
</div>
<div class="fieldContainer">
<label for="ModalPassword">Password</label>
<input id="ModalPassword" name="pwd" type="password" class="textInput" />
</div>
<div class="fieldContainer">
<input style="vertical-align:middle" name="rememberme" type="checkbox" id="rememberme" value="forever" />
<span>Remember Me</span>
</div>
</fieldset>
</div>
<p class="formContent">
<button type="submit" class="btn signInButton"><span>Sign in</span></button>
</p>
<div class="hr"></div>
<p class="formContent">
<a href="<?php bloginfo('wpurl') ?>/wp-login.php?action=lostpassword" id="popupLoginForgotPswd">Forgot your password?</a>
</p>
</form>
</div>
</div>
Save and upload.
Keep in mind that if you modify core theme files then each time you update the theme you will need to make all of those modifications again to the updated theme files.