Dynamic category list link to product list page not working

Question

I have a dynamic catagory list that is populated from a mySQL db
<?php do { ?>
          <li><a href="product-list.php?CatID=<?php echo $row_Recordset1['CatID']; ?>"><?php echo $row_Recordset1['CatName']; ?></a></li>
          <?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
im not sure if the aboive is correct?
i need to link it to the product page and just dispaly all the products in that catagory
the product-list php code is
$var1_Recordset1 = "-1";
if (isset($_GET['CatID'])) {
  $var1_Recordset1 = $_GET['CatID'];
mysql_select_db($database_lotties, $lotties);
$query_Recordset1 = sprintf("SELECT * FROM lottieProducts, lottieCat WHERE lottieCat.CatID = lottieProducts.CatID AND lottieCat.CatID = %s", GetSQLValueString($var1_Recordset1, "int"));
$Recordset1 = mysql_query($query_Recordset1, $lotties) or die(mysql_error());
$row_Recordset1 = mysql_fetch_assoc($Recordset1);
$totalRows_Recordset1 = mysql_num_rows($Recordset1);
thanks in advance

Answer 1

done it
$varCat_rsProductData = "0";
if (isset($_GET["cat"])) {
  $varCat_rsProductData = $_GET["cat"];
mysql_select_db($database_lotties, $lotties);
$query_rsProductData = sprintf("SELECT * FROM lottieProducts WHERE lottieProducts.CatID = %s", GetSQLValueString($varCat_rsProductData, "int"));
$rsProductData = mysql_query($query_rsProductData, $lotties) or die(mysql_error());
$row_rsProductData = mysql_fetch_assoc($rsProductData);
$totalRows_rsProductData = mysql_num_rows($rsProductData);
link from cat list
<a href="product-list.php?cat=<?php echo $row_Recordset1['CatID']; ?>"><?php echo $row_Recordset1['CatName']; ?></a>