Help me

I write login this error appear

idex.php

<html>
<form action='login.php' method='POST'>
<p>User Name: <input type='text' name='username'><br/>
Password: <input type='password' name='password'><br/></p>
<input type='submit' value='log in'>
</form>
</html>

login.php

<?php

session_start();

$username = $_POST['username'];
$password = $_POST['password'];
if($username&&$password)
{

$connect = mysql_connect("localhost","root","") or die ("couldn’t connect!");
mysql_select_db("phplogin") or die ("couldn’t find db");

$query = mysql_query("SELECT * FROM user WHERE username ='$username'");

$numrows = mysql_num_rows($query);

if ($numrows !=0)
{
//code to login

while ($row = mysql_fetch_array($query))
 {
// to get value enter by user
	$dbusername = $row['username'];
	// go to complte this $dbpassword
	$dbpassword = $row['password']; [COLOR="Red"]//here error[/COLOR]  Notice: Undefined index: password in C:\\wamp\\www\\login\\login.php on line 26

  }

//check to see if they match!
   if ($username==$dbusername)
      {
         echo "You’re in!<a href='member.php'> click </a>here to enter the member page.";
	 $_SESSION['username']=$username;
      }
      else
          echo "Incorrect password!";

}
else 
  die ("That user doesn’t exist");
}
else!
	die("Please enter and username and apassword");
?>

Are you sure the row in the database is named password exactly? Also, are you just checking the username against the database, that’s what it seems, no password validation?