Printing Specific part of a web page

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Javascript

PHP

I have a rendered table from a mysql database on my web page. after applying some css properties to it, i want to b able to print that portion where the table is..
here is the php an html code for the portion I'll like to print on a portrait paper orientation

<div id="content">
       
    <div><span style="font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif; font-size: 13pt; color: #8b0000">STUDENTS' ACADEMIC PROFILE</span></div>
      
      <hr  style="color:#900;"/>
      
  <div class="rsltPg">
      <p>
  <div >    <div class="titleAmin">
           <input  name="unimaidLogo" type="image" class="AdminImg" src="../Images/logoanim.gif" alt="unimaidLogo" align="middle" width="45" height="80" hspace="16" vspace="13" />
         
<p style="font-size:16px">UNIVERSITY OF MAIDUGURI </p>
         <p style="font-size:10px">(Faculty of Engineering)</p>
         <p>DEPARTMENT OF CHEMICAL ENGINEERING</p>

       </div>

      <!--Start University news-->
  </div>
  
<div>
        <div> 
          <form action="<?php echo $_SERVER['PHP_SELF'] ?>" method="GET" name="stuRequest" id="stuRequest" >
            <p>
      <label for="sessionID" style="font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif; font-weight:bold; font-size: 10pt; color: #8b0000">Select Session:</label>
      <select name="sessionID" id="sessionID">
        <?php
do {  
?>
        <option value="<?php echo $row_rsAcadsession['id']?>"><?php echo $row_rsAcadsession['sessionID']?></option>
        <?php
} while ($row_rsAcadsession = mysql_fetch_assoc($rsAcadsession));
  $rows = mysql_num_rows($rsAcadsession);
  if($rows > 0) {
      mysql_data_seek($rsAcadsession, 0);
	  $row_rsAcadsession = mysql_fetch_assoc($rsAcadsession);
  }
?>
      </select> 
      /
            <select name="semesterID">
            <option value="1">1st Semester</option>
            <option value="2">2nd Semester</option>
          </select>
          <?php if(isset($_SESSION['studentID']))
		  {
		  ?>
          <p style="padding-removed40px"><input name="chkResults" type="submit" id="chkResults" value="Load Results"></p>
      </p></form>
     <?php if(isset($_GET['chkResults'])) {  ?> <p><label for="stuName">Student Name: </label>
        <?php echo $row_rsStursltname['Name']; ?> , <?php echo $row_rsStursltname['lastName']; ?></p>
      <p><label for="stuID">Student ID: </label><?php echo $_SESSION['studentID'] ?>
</p>
      <p><label for="stuSession">Session: </label>
        <?php echo $row_rsStursltYr['sessionID']; ?>      </p>
      <?php if ($totalRows_rsVwsessrsltdet !=0) {?>    
          <table align="center">
  <caption><p>B. Eng.(Hons) Chemical Engineering</p>
<?php echo $row_rsVwsessrsltdet['levelID']; ?> Level <?php echo $row_rsStursltsem['semesterName']; ?> ,<?php echo $row_rsStursltYr['sessionID']; ?>session
</caption>

    <tr>
      <th width="15%" scope="col">Course code</th>
      <th width="41%" scope="col">Course title</th>
      <th width="20%" scope="col"> Unit</th>
      <th width="24%" scope="col">Marks</th>
      <th width="24%" scope="col">Grade</th>
      <th width="24%" scope="col">product</th>
    </tr>
    <?php do { ?>
      <tr class="alt">
        <td><a><?php echo $row_rsVwsessrsltdet['courseID']; ?></a></td>
        <td><?php echo $row_rsVwsessrsltdet['courseDescription']; ?></td>
        <td><?php echo $row_rsVwsessrsltdet['courseUnit']; ?></td>
        <td><?php echo $row_rsVwsessrsltdet['Marks']; ?></td>
        <td><?php echo $row_rsVwsessrsltdet['Grade']; ?></td>
        <td><?php echo $row_rsVwsessrsltdet['GPP']; ?></td>
      </tr>
      <?php } while ($row_rsVwsessrsltdet = mysql_fetch_assoc($rsVwsessrsltdet)); ?>
          </table> 
        
<br /> 
     
        <?php
		
		while($row=mysql_fetch_array($rsChkarray,MYSQL_BOTH))
{

#calculate the results for each academic semester
mysql_select_db($database_connChePortal, $connChePortal);
$cal_Cumm= "SELECT SUM(vwr.courseUnit) cummUnit, SUM(vwr.GPP) cummGPP
			FROM vw_result vwr
			WHERE vwr.Grade NOT IN ('F')
			AND vwr.id=".$row[0]."
			AND vwr.semesterID=".$row[1].";";
			
$results=mysql_query($cal_Cumm, $connChePortal) or die(mysql_error());
$row_calCumm=mysql_fetch_assoc($results);


#declare the results into variables
$units= $row_calCumm['cummUnit'];
$gpp=$row_calCumm['cummGPP'];

$semesterGPA=($gpp/$units);

#cummulative results
#$cUnit=0;
$cUnit +=$units;
#$cGpp=0;
$cGpp +=$gpp;
$cGpa= ($cGpp/$cUnit);

#echo "</br>";
#print results
if ($row[1]==$_GET['semesterID']){

echo "<p><label for='cumUnit'>
        Cummulative Unit:</label>".$cUnit."</p>";
echo "<p><label for='cumPrdt'>
        Cummulative GPP:</label>".$cGpp."</p>";
echo "<p><label for='cumGpa'>
        Cummulative GPA:</label>".$cGpa."</p>";

}
#check URL variable for the result request	
if(($row[0]==$_GET['sessionID']) &&($row[1]==$_GET['semesterID']))  break;

}
   ?>
        
        
        
  <?php } else echo "No result for ".$row_rsStursltYr['sessionID']." session"; ?> 
  <?php } ?>
  </br>
  <?php } else echo "<p>No student to view result profile</p>"; ?>
  
 
        </div>
      
        
        
      </div>
      <!--Start news-->
  </div>





</div>

PS: recommended resourses also required for mi to learn javascript well.
Thanks