.in_user_panel {  
  position: fixed;  
  z-index: 35;  
  margin-top: -5px;  
  margin-left: -5px;  
}  

.in_hover_t a { opacity:1.0; -moz-opacity:1.0; filter:alpha(opacity=100); }  
.in_hover_t a:hover { opacity:0.3; -moz-opacity:0.3; filter:alpha(opacity=40); }

<div class="in_hover_t"><table class="in_user_panel" border="0" cellpadding="2" cellspacing="0" width="5%" style="box-shadow: 0 0 10px rgba(0,0,0,0.5);border-radius:3px;border:1px solid #546bad;"><tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;">  
<img src="$USER_AVATAR_URL$" width="80%" border="0" alt="$_USERNAME$" title="$_USERNAME$" />  

<img src="http://www.in-ucoz.ru/img/no_avatar.png" width="30" border="0" alt="$_USERNAME$" title="$_USERNAME$" /></td></tr>  
<tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;"><a href="$PM_URL$"><img src="http://www.in-ucoz.ru/buttons/message.png" width="80%" border="0" /></a></td></tr>  
<tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;"><a href="$PERSONAL_PAGE_LINK$"><img src="http://www.in-ucoz.ru/buttons/in_profile.png" width="80%" border="0" /></a></td></tr>  
<tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;"><a href="$LOGOUT_LINK$"><img src="http://www.in-ucoz.ru/buttons/in_logout.png" width="80%" border="0" /></a></td></tr></table></div><div class="in_hover_t"><table class="in_user_panel" border="0" cellpadding="2" cellspacing="0" width="5%" style="box-shadow: 0 0 10px rgba(0,0,0,0.5);border-radius:3px;border:1px solid #546bad;"><tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;">  
<img src="$USER_AVATAR_URL$" width="80%" border="0" alt="$_USERNAME$" title="$_USERNAME$" />  

<img src="http://www.in-ucoz.ru/img/no_avatar.png" width="30" border="0" alt="$_USERNAME$" title="$_USERNAME$" /></td></tr>  
<tr><td valign="middle" style="width:30%;background-image: url();background-repeat: repeat-x;background-position: center;background-color:#546bad;padding-left:5px;"><a href="$LOGIN_LINK$"><img src="http://www.in-ucoz.ru/buttons/in_login.png" width="80%" border="0" /></a></td></tr></table></div>