when click a link get data for specific category

[anthelo]

Hi,

 

im trying when i click a link to show data(images) from specific category

 

<script type="text/javascript">
function showFrontPage(str)
{
if (str=="")
  {
  document.getElementById("txtHint").innerHTML="";
  return;
  }
if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.onreadystatechange=function()
  {
  if (xmlhttp.readyState==4 && xmlhttp.status==200)
    {
    document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
    }
  }
xmlhttp.open("GET","index.php?pid=test.php?fpID="+str,true);
xmlhttp.send();
}
</script>

	<?php
	$query = "SELECT * FROM tblfrontpage_categories ORDER BY Id";
	$result = mysql_query($query);
	while($row = mysql_fetch_assoc($result)) {  
?>
<div id="FrontPageNavige">
<form onClick="showFrontPage(this.<?php echo $row['Id'];?>);">
<a  href="#"><?php echo $row['Name'];?></a>
</form>
</div> 
<?php } ?>
		   <?php
			$query = "SELECT * FROM tblfrontpage WHERE Id = '".$_GET['fpID']."' ORDER BY Id LIMIT 12";
			$result = mysql_query($query);
			while($row = mysql_fetch_assoc($result)) {  
			?>

               <div class="boxFrontPage">
		   <div><img src="<?php echo html_entity_decode($row['Thumb']);?>" border="0"  width="110" height="64" /></div>
                </div>
		   <?php } ?>

 

what im doing wrong?

 

Thank you