image links not working

i have created an image gallery using php.
everything if fine except that the links to the full images are not working.
www.nitesh.x10hosting.com/gallery.php
the thumbnails are linked to the full image , however this does not work as expected.

 

i changed the links of some of the images to absolute ones(see gallery illusion) , but even that did not work.
the problem seems to be something else as when i put a "image" link on that page to one of the images it worked fine,but the thumbnails do not link.
one more thing i would like to add is that the links work fine in IE6 and OPERA but not in firefox and safari

 

here's the portion of the code(gallery.php) that generates the images and links

PHP:

if(!$_GET['album_name'])
{}
else
{
        $album_name=$_GET['album_name'];
        $max=$_GET['max'];
        if(!isset($_GET['pic_num'])) $_GET['pic_num']=0;
        $pic_num=$_GET['pic_num']; 
          
        require('db_login_details.php');
          
        $connection=mysql_connect($db_hostname, $db_username, $db_password);
        if(!$connection)
        die("Failed to connect to database".mysql_error());
        
        
// for previous        
        if(!$pic_num)
        $previous="#nogo";
        else
        {$temp=$pic_num-9;
        $previous="gallery.php?album_name=$album_name&pic_num=".$temp."&max=$max" ;
        }
        
        $query="SELECT pic_num,pic_name,pic_thumb,pic_full,pic_size,pic_desc FROM wizkid_mysite.gallery_$album_name where pic_num > '$pic_num'";
//          echo"\n<br/>pic_num = $pic_num <br/>$query";
         $query_result=mysql_query($query);
         echo"\n<div class=\"gallery\"><ul>";
         if(!$query_result)
         {
         die("<br/>table ".mysql_error());
         }
         
         $i=0;
         while(($row=mysql_fetch_row(($query_result)))&&($i++<9))
         {
             echo"\n<li>
                \n 
                \n<a href=\"$row[3]\">
                \n<img src=\"$row[2]\" width=\"100px\" height=\"100px\" alt=\"$row[5]\"/>
                \n</a>
                \n</li> ";
            $for_next=$row[0];
            
                
         }
//         if(!($row=mysql_fetch_row(($query_result)))&&$i++<9)
            while(($i)%3!=0)
            {
             $i++;
             echo"\n<li style=\"visibility:hidden;\"><a><img></a></li>";    
            }
         echo"\n</ul></div>";
 // for  next
//    echo"<br/>for_next= $for_next max=$max<br/>";
    if($for_next<$max)
    $next=htmlentities($_SERVER['PHP_SELF'])."?album_name=$album_name&pic_num=$for_next&max=$max";
    else
    $next="#nogo";
        echo"\n<br/><p class=\"album_nav\">
             \n<a href=\"".$previous."\">previous</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\n<a href=\"".$next."\">next</a>             
            \n<a href=\"".htmlentities($_SERVER['PHP_SELF'])."\">Change ALbum</a>
            \n</p>";
            mysql_close($connection);
             
}