разметка
<div id="header_b">
<input type="button" id="but1" value="" onclick="slideToggleDiv();">
</div>
<div id="aut_h">
<div id="aut_post">
<form action="#" method="post">
Логин:
<img src="img/user.png" alt="" /><input type="text" name="login" />
Пароль:
<img src="img/pass.png" alt="" /><input type="password" name="password" /><br />
<input type="submit" value="Вход" />
</form>
</div>
</div>
css
#aut_h{
width:163px;
height:120px;
border-radius: 6px;
float: right;
display: none;
background: #eaeaea url(img/aut_head.png) repeat-x;
margin: 2px;
top: 40px;
left: 100px;
}
#aut_post{
padding: 4px;
color: #1ca4d3;
text-align: center;
}