<table algin=center>
   <tr style="background: Gray; color: white;" align=center>
      <td>Calificacion</td>
      <td>Nombre(s)</td>
      <td>Apellido Paterno</td>
      <td>Apellido Materno</td>
      <td>Carrera</td>
   </tr>
<?php   
if($_COOKIE[who] == md5(1)){
while($lista = mysql_fetch_array($query)){
            echo "<input type=hidden value=1 name=alta>";
            extract($lista);
            $conteoFilas ++;
            if($conteoFilas % 2 == 0){
               $colorFila = "#fofofo";
            }else{
               $colorFila = "#c48efb";
            }
            $contador ++;
            $contadorFilas ++;
            $varContador = "cal".$contador;
            echo "
         <tr style=\"background: $colorFila\" align=center>
            <td><input type=text size=2       name=$varContador></td>
            <td>$nombre_alumno</td>
            <td>$apellidop_alumno</td>
            <td>$apellidom_alumno</td>
            <td>$carrera</td>
         </tr>";
         }
      }
      echo "<tr><td>";
      echo "<input type=submit name=modulo value='Subir Calificacion'>";
      echo "</tr></td>";
      echo "</form>";
      backHistory();
   }elseif($_COOKIE[who] != md5(1)){
      echo "<center style='color: red'><b>USUARIO NO AUTORIZADO</b></center>";
      echo "<center><img src='img/logo_violeta2.jpg'></center>";
   }else{
      echo "<center style='color: red'><b>NO HAS INICIADO SESION</b></center>";
      echo "<center><img src='img/logo_violeta2.jpg'></center>";
   }
   ?>
</table>