Как сделать постраничную навигацию???

<?if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();?>
<div class="catalog-sections-top">
<?foreach($arResult["SECTIONS"] as $arSection):?>
<p><a href="<?=$arSection["SECTION_PAGE_URL"]?>"><?=$arSection["NAME"]?></a></p>
<table cellpadding="0" cellspacing="0" border="0">
   <tr>
      <?
      $cell = 0;
      foreach($arSection["ITEMS"] as $arElement):
      ?>
      <td valign="top" width="<?=round(100/$arParams["LINE_ELEMENT_COUNT"])?>%">

         <table cellpadding="0" cellspacing="0" border="0">
            <tr>
               <td valign="top">
               <?if(is_array($arElement["PREVIEW_PICTURE"])):?>
                  <a href="<?=$arElement["DETAIL_PAGE_URL"]?>"><img border="0" src="<?=$arElement["PREVIEW_PICTURE"]["SRC"]?>" width="<?=$arElement["PREVIEW_PICTURE"]["WIDTH"]?>" height="<?=$arElement["PREVIEW_PICTURE"]["HEIGHT"]?>" alt="<?=$arElement["PREVIEW_PICTURE"]["ALT"]?>" title="<?=$arElement["NAME"]?>" /></a><br />
               <?elseif(is_array($arElement["DETAIL_PICTURE"])):?>
                  <a href="<?=$arElement["DETAIL_PAGE_URL"]?>"><img border="0" src="<?=$arElement["DETAIL_PICTURE"]["SRC"]?>" width="<?=$arElement["DETAIL_PICTURE"]["WIDTH"]?>" height="<?=$arElement["DETAIL_PICTURE"]["HEIGHT"]?>" alt="<?=$arElement["DETAIL_PICTURE"]["ALT"]?>" title="<?=$arElement["NAME"]?>" /></a><br />
               <?endif?>
               </td>
               <td valign="top"><a href="<?=$arElement["DETAIL_PAGE_URL"]?>"><?=$arElement["NAME"]?></a><br />
                  <?foreach($arElement["DISPLAY_PROPERTIES"] as $pid=>$arProperty):?>
                     <small><?=$arProperty["NAME"]?>: <?
                        if(is_array($arProperty["DISPLAY_VALUE"]))
                           echo implode(" / ", $arProperty["DISPLAY_VALUE"]);
                        else
                           echo $arProperty["DISPLAY_VALUE"];?></small><br />
                  <?endforeach?>
                  <br />
                  <?=$arElement["PREVIEW_TEXT"]?>
               </td>
            </tr>
         </table>

         <?foreach($arElement["PRICES"] as $code=>$arPrice):?>
            <?if($arPrice["CAN_ACCESS"]):?>
               <p><?=$arResult["PRICES"][$code]["TITLE"];?>:  
               <?if($arPrice["DISCOUNT_VALUE"] < $arPrice["VALUE"]):?>
                  <s><?=$arPrice["PRINT_VALUE"]?></s> <span class="catalog-price"><?=$arPrice["PRINT_DISCOUNT_VALUE"]?></span>
               <?else:?>
                  <span class="catalog-price"><?=$arPrice["PRINT_VALUE"]?></span>
               <?endif?>
               </p>
            <?endif;?>
         <?endforeach;?>
         <?if(is_array($arElement["PRICE_MATRIX"])):?>
            <table cellpadding="0" cellspacing="0" border="0" width="100%" class="data-table">
            <thead>
            <tr>
               <?if(count($arElement["PRICE_MATRIX"]["ROWS"]) >= 1 && ($arElement["PRICE_MATRIX"]["ROWS"][0]["QUANTITY_FROM"] > 0 || $arElement["PRICE_MATRIX"]["ROWS"][0]["QUANTITY_TO"] > 0)):?>
                  <td valign="top" nowrap><?= GetMessage("CATALOG_QUANTITY") ?></td>
               <?endif?>
               <?foreach($arElement["PRICE_MATRIX"]["COLS"] as $typeID => $arType):?>
                  <td valign="top" nowrap><?= $arType["NAME_LANG"] ?></td>
               <?endforeach?>
            </tr>
            </thead>
            <?foreach ($arElement["PRICE_MATRIX"]["ROWS"] as $ind => $arQuantity):?>
            <tr>
               <?if(count($arElement["PRICE_MATRIX"]["ROWS"]) > 1 || count($arElement["PRICE_MATRIX"]["ROWS"]) == 1 && ($arElement["PRICE_MATRIX"]["ROWS"][0]["QUANTITY_FROM"] > 0 || $arElement["PRICE_MATRIX"]["ROWS"][0]["QUANTITY_TO"] > 0)):?>
                  <th nowrap><?
                     if (IntVal($arQuantity["QUANTITY_FROM"]) > 0 && IntVal($arQuantity["QUANTITY_TO"]) > 0)
                        echo str_replace("#FROM#", $arQuantity["QUANTITY_FROM"], str_replace("#TO#", $arQuantity["QUANTITY_TO"], GetMessage("CATALOG_QUANTITY_FROM_TO")));
                     elseif (IntVal($arQuantity["QUANTITY_FROM"]) > 0)
                        echo str_replace("#FROM#", $arQuantity["QUANTITY_FROM"], GetMessage("CATALOG_QUANTITY_FROM"));
                     elseif (IntVal($arQuantity["QUANTITY_TO"]) > 0)
                        echo str_replace("#TO#", $arQuantity["QUANTITY_TO"], GetMessage("CATALOG_QUANTITY_TO"));
                  ?></th>
               <?endif?>
               <?foreach($arElement["PRICE_MATRIX"]["COLS"] as $typeID => $arType):?>
                  <td><?
                     if($arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["DISCOUNT_PRICE"] < $arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["PRICE"]):?>
                        <s><?=FormatCurrency($arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["PRICE"], $arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["CURRENCY"])?></s><span class="catalog-price"><?=FormatCurrency($arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["DISCOUNT_PRICE"], $arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["CURRENCY"]);?></span>
                     <?else:?>
                        <span class="catalog-price"><?=FormatCurrency($arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["PRICE"], $arElement["PRICE_MATRIX"]["MATRIX"][$typeID][$ind]["CURRENCY"]);?></span>
                     <?endif?>
                  </td>
               <?endforeach?>
            </tr>
            <?endforeach?>
            </table><br />
         <?endif?>
         <?if($arParams["DISPLAY_COMPARE"]):?>
            <input name="compary" type="button" value="<?=GetMessage("CATALOG_COMPARE")?>" OnClick="window.location='<?=$arElement["COMPARE_URL"]?>'" /> 
         <?endif?>
         <?if($arElement["CAN_BUY"]):?>
            <input name="buy" type="button" value="<?= GetMessage("CATALOG_BUY") ?>" OnClick="window.location='<?=$arElement["BUY_URL"]?>'" />
             <input name="add" type="button" value="<?= GetMessage("CATALOG_ADD") ?>" OnClick="window.location='<?=$arElement["ADD_URL"]?>'" />
         <?elseif(count($arResult["PRICES"])>0):?>
            <?=GetMessage("CATALOG_NOT_AVAILABLE")?>
         <?endif?>
          
      </td>
   <?
   $cell++;
   if($cell>=$arParams["LINE_ELEMENT_COUNT"]):
      $cell = 0;
   ?>
   </tr>
   <tr>
   <?
   endif; // if($n%$LINE_ELEMENT_COUNT == 0):
      endforeach; // foreach($arResult["ITEMS"] as $arElement):
      while ($cell<$arParams["LINE_ELEMENT_COUNT"]):
         $cell++;
      ?><td> </td><?
      endwhile;
      ?>
   </tr>
</table>
<?endforeach?>
</div>