function validationKey($len)
{
 $pw = ""; //intialize to be blank
 for($i=0;$i<$len;$i++)
 {
   switch(rand(1,3))
   {
     case 1: $pw.=chr(rand(48,57));  break; //0-9
     case 2: $pw.=chr(rand(65,90));  break; //A-Z
     case 3: $pw.=chr(rand(97,122)); break; //a-z
   }
 }
 return $pw;
}

<div id="login" class="panel" title="Login">

<form title="Login" class="panel" action="login.php" method="POST" selected="true">
   <fieldset>

        <table>


		<tr>
			<td>Email</td>
			<td><input type="text" name="email" value=""></td>
		</tr>
		<tr>
					<td>Password</td>
					<td><input type="password" name="password" value=""></td>
		</tr>
		<tr><td>New User</td><td><input type="checkbox" name="new"></td></tr>
		</table>
		<hr>
		<a class="whiteButton" type="submit" href="#">Submit</a>
		</fieldset>
		</form>
		</div>