I put the condition as following
while($row = mysql_fetch_array($result));
echo"</table></div>";
}
else
echo "<p><i><b><font face=\"Chiller\" size=\"6\" color=\"#FF0000\">Sorry dear</font><font face=\"Chiller\" size=\"5\" color=\"#800000\">,
there is may be an error in our system, please contact us.</font></b></i></p>";