<!-- I USED THE DEMO DIV TO CENTER-ALIGN ON THE PAGE -->
<div id="demo">

<!-- THE LOGIN WRAPPER FLOATS TO THE RIGHT WITHIN THE DEMO DIV AND HOLDS THE BUTTON AND HIDDEN FORM TO ENSURE ALIGNMENT -->
<div id="loginWrapper">

<!-- BEGIN LOGIN BUTTON -->
<div id="loginButton">
<a href="#">Sign in</a>
</div>
<!-- END LOGIN BUTTON -->

<!-- BEGIN HIDDEN FORM -->
<div id="loginForm">
<form action="#" method="#">
<fieldset>
<label for="usernameOrEmail">Username or email:</label>
<input type="text" id="usernameOrEmail" class="textfield" />
<label for="pass">Password:</label>
<input type="password" id="pass" class="textfield" />
<input type="submit" value="Sign in" class="loginButton" />
<input type="checkbox" id="rememberMe" class="checkBox" /> Remember me
</fieldset>
</form>
<ul>
<li><a href="#">Forgot your password?</a></li>
<li><a href="#">Forgot your username?</a></li>
<li><a href="#">Already using Twitter on your phone?</a></li>
</ul>
</div>
<!-- END HIDDEN FORM -->

</div>
</div>

$(document).ready(function(){
	// Toggle the login form
	$("#loginButton").click(function() {
		$("#loginForm").toggle();
		$("#loginButton a").toggleClass("active");
		return false;
	});
});

#demo { /* CENTERS THE DIV CONTAINING THE ELEMENTS */
  width: 980px;
  height: 20px;
  margin: 0 auto;
  padding: 20px 0 0 0;
}

#loginWrapper { /* WRAPS THE BUTTON AND LOGIN FORM FOR ALIGNMENT PURPOSES */
  float: right;
  width: 230px;
  height: auto;
}

#loginButton {
  float: right;
  width: 80px;
  height: 30px;
}

#loginButton a {
  display: block;
  font-size: 0.9em;
  font-weight: bold;
  line-height: 30px;
  text-align: center;
  color: #fff;
  text-decoration: none;
  padding: 0 22px 0 0;
  background: #88bbd4 url(../img/loginSprite.png) 0px 0px no-repeat;
  cursor: pointer;
  border: 1px solid #88bbd4;
  -moz-border-radius: 6px;
  -webkit-border-radius: 6px;
  border-radius: 6px;
  outline: none;  
}

#loginButton a:hover {
  color: #fff;
  background: #5599bb url(../img/loginSprite.png) 0px -30px no-repeat;
}

#loginButton a.active {
  color: #477;
  border: 1px solid #ddeef6;
  background: #ddeef6 url(../img/loginSprite.png) 0px -60px no-repeat;
  -moz-border-radius: 6px;
  -webkit-border-radius: 6px;
  border-radius: 6px;
  -moz-border-radius-bottomright: 0px;
  -webkit-border-bottom-right-radius: 0px;
  -moz-border-radius-bottomleft: 0px;
  -webkit-border-bottom-left-radius: 0px;
}

/* THIS IS THE HIDDEN FORM */

#loginForm {
  position: fixed;
  width: 200px;
  font-size: 0.8em;
  color: #477;
  margin: 32px 0 0 0;
  padding: 15px;
  background: #ddeef6;
  -moz-border-radius-topleft: 6px;
  -webkit-border-top-left-radius: 6px;
  -moz-border-radius-bottomleft: 6px;
  -webkit-border-bottom-left-radius: 6px;
  -moz-border-radius-bottomright: 6px;
  -webkit-border-bottom-right-radius: 6px;
  display: none;
}

#loginForm ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

#loginForm ul li {
  margin: 0;
  padding: 0;
}

#loginForm ul li a {
  display: block;
  color: #27b;
  text-decoration: none;
  padding: 6px 0;
}

#loginForm ul li a:hover {
  color: #27b;
  text-decoration: underline;
}

#loginForm form,fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

#loginForm label {
  display: block;
  margin: 0 0 5px 0;
}

.textfield {
  display: block;
  width: 186px;
  font: 1.2em arial;
  color: #000;
  margin: 0 0 10px 0;
  padding: 6px;
  background: #fff;
  border: 1px solid #0bacea;
}

.loginButton {
  font: bold 1.1em tahoma;
  color: #fff;
  margin: 0 0 10px 0;
  padding: 5px;
  background: #33bef6 url(../img/loginButtonBackgr.png) repeat-x;
  border: 1px solid #0bacea;
  -moz-border-radius: 5px;
  -webkit-border-radius: 5px;
  border-radius: 5px;  
  text-shadow: 1px 1px 1px #044660;
}

.checkBox {
  vertical-align: middle;
}