error in Paginationcode(getting only First page Results)

["malayappa2000" <malayappa@xxxxxxxxxxxxxxxxxx>]

Hi Guys

We wrote code for pagination. But we are getting the results of first
page only.not getting remaining pages.

Here is the code our pagination code
please provide some solution


<?php

mysql_connect("localhost", "root", "") or die(mysql_error());
mysql_select_db("bulksms") or die(mysql_error());


if (!(isset($pagenum)))
{
$pagenum =1;
}


$data = mysql_query("SELECT * FROM bulk_msg") or die(mysql_error());
$rows = mysql_num_rows($data);
echo "number of rows are".$rows."<br>";
//This is the number of results displayed per page
$page_rows = 4;

//This tells us the page number of our last page
$last = ceil($rows/$page_rows);
echo "last page is".$last."<br>";

//this makes sure the page number isn't below one, or more than our
maximum pages
if ($pagenum < 1)
{
$pagenum = 1;
echo "first time page no".$pgaenum."<br>";
}
elseif ($pagenum > $last)
{
$pagenum = $last;
echo "next time page no".$pgaenum."<br>";
}

//This sets the range to display in our query
$max = 'limit ' .($pagenum - 1) * $page_rows .',' .$page_rows;

// add $max limit
$data_p = mysql_query("SELECT * FROM bulk_msg $max") or
die(mysql_error());


while($info = mysql_fetch_array( $data_p ))
{
Print $info['message'];
echo "<br>";
}
echo "<p>";


echo " --Page $pagenum of $last-- <p>";

// links
if ($pagenum == 1)
{
}
else
{
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=1'> <<-First</a> ";
echo " ";
$previous = $pagenum-1;
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$previous'>
<-Previous</a> ";
}



// generating the Next and Last links
if ($pagenum == $last)
{
}
else {
$next = $pagenum+1;
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$next'>Next -></a> ";
echo " ";
echo " <a href='{$_SERVER['PHP_SELF']}?pagenum=$last'>Last ->></a> ";
}
?>   

Thanks &Regards
malayappa