I have a table that I cannot get to size correctly. The table populates with information from a database via a loop. Sometimes if the data is too long the table extends past where it should. When the data is that long I want the data to wrap in the cells so the table stays where it should. I have tried the normal table data but it isn't working. Any ideas?

<?php
    echo "<table>
        <tr>
            <th>id</th>
            <th>700-number</th>
            <th>First name</th>
            <th>Last name</th>
            <th>Email</th>
            <th>Response</th>
            <th>Created On</th>
        </tr>";

    $num = mysql_num_rows($result);

    for ($i = 0; $i < $num; $i++)
    {
        $row = mysql_fetch_array($result);

        $id = $row['id'];
        $school_id = $row['school_id'];
        $fname = $row['first_name'];
        $lname = $row['last_name'];
        $email = $row['email'];
        $attending = ($row['attending'] == 0) ? 'No' : 'Yes';
        $date = $row['created_on'];

        $class = (($i % 2) == 0) ? "td2" : "td1";

        echo "<tr>";
            echo "<td class=" . $class . ">$id</td>";
            echo "<td class=" . $class . ">$school_id</td>";
            echo "<td class=" . $class . ">$fname</td>";
            echo "<td class=" . $class . ">$lname</td>";
            echo "<td class=" . $class . ">$email</td>";
            echo "<td class=" . $class . ">$attending</td>";
            echo "<td class=" . $class . ">$date</td>";
        echo "</tr>";
    }
?>
</table>