Java Script not working

[daferx]

I have login box on a site, its suposed to slide, but it doesn't really work and I can't figure it out why, here's the code:\[code\]<div style="float:right; width:640px; font-size:10px;"><div style="float:right; margin:5px;" align="right">Pentru a va conecta apasati <a onclick="ShowHide(); return false;" href="http://stackoverflow.com/questions/14067243/#">aici</a><br/><a href="http://stackoverflow.com/register.php">Inscriere utilizator nou</a></div><div id="loginbox" class="div_login_box"><form action="/login.php" method="post" name="loginform"><table width="420" border="0"> <tr> <td>E-Mail:</td> <td><input name="email" id="email" type="text" size="15" /></td> <td>Cod:</td> <td><input name="password" id="password" type="password" size="15" /></td> <td><input style="border:none" name="submit" type="image" src="http://stackoverflow.com/images/ok.png" border="0" value="http://stackoverflow.com/questions/14067243/Ok" /></td> </tr></table></form></div></div>\[/code\]here is the live example:http://dev.eurodiet.ro/