Обрезание превью текста

<?if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();?>
<div class="news-list">
<?if($arParams["DISPLAY_TOP_PAGER"]):?>
   <?=$arResult["NAV_STRING"]?><br />
<?endif;?>
<?foreach($arResult["ITEMS"] as $arItem):?>
   <p class="news-item">
      <?if($arParams["DISPLAY_PICTURE"]!="N" && is_array($arItem["PREVIEW_PICTURE"])):?>
         <?if(!$arParams["HIDE_LINK_WHEN_NO_DETAIL"] || ($arItem["DETAIL_TEXT"] && $arResult["USER_HAVE_ACCESS"])):?>
            <a href="<?=$arItem["DETAIL_PAGE_URL"]?>"><img class="preview_picture" border="0" src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="<?=$arItem["PREVIEW_PICTURE"]["WIDTH"]?>" height="<?=$arItem["PREVIEW_PICTURE"]["HEIGHT"]?>" alt="<?=$arItem["NAME"]?>" title="<?=$arItem["NAME"]?>" style="float:left" /></a>
         <?else:?>
            <img class="preview_picture" border="0" src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="<?=$arItem["PREVIEW_PICTURE"]["WIDTH"]?>" height="<?=$arItem["PREVIEW_PICTURE"]["HEIGHT"]?>" alt="<?=$arItem["NAME"]?>" title="<?=$arItem["NAME"]?>" style="float:left" />
         <?endif;?>
      <?endif?>
      <?if($arParams["DISPLAY_DATE"]!="N" && $arItem["DISPLAY_ACTIVE_FROM"]):?>
         <span class="news-date-time"><?echo $arItem["DISPLAY_ACTIVE_FROM"]?></span>
      <?endif?>
      <?if($arParams["DISPLAY_NAME"]!="N" && $arItem["NAME"]):?>
         <?if(!$arParams["HIDE_LINK_WHEN_NO_DETAIL"] || ($arItem["DETAIL_TEXT"] && $arResult["USER_HAVE_ACCESS"])):?>
            <a href="<?echo $arItem["DETAIL_PAGE_URL"]?>"><b><?echo $arItem["NAME"]?></b></a><br />
         <?else:?>
            <b><?echo $arItem["NAME"]?></b><br />
         <?endif;?>
      <?endif;?>
      <?if($arParams["DISPLAY_PREVIEW_TEXT"]!="N" && $arItem["PREVIEW_TEXT"]):?>


         <?$text_for_anons = $arItem["PREVIEW_TEXT"];?>
            <?$text_end_anons = substr($text_for_anons,0,420);?>


         <small><?echo $text_end_anons;?>......</small>

            
      <?endif;?>
      <?if($arParams["DISPLAY_PICTURE"]!="N" && is_array($arItem["PREVIEW_PICTURE"])):?>
         <div style="clear:both"></div>
      <?endif?>
      <?foreach($arItem["FIELDS"] as $code=>$value):?>
         <small>
         <?=GetMessage("IBLOCK_FIELD_".$code)?>: <?=$value;?>
         </small><br />
      <?endforeach;?>
      <?foreach($arItem["DISPLAY_PROPERTIES"] as $pid=>$arProperty):?>
         <small>
         <?=$arProperty["NAME"]?>: 
         <?if(is_array($arProperty["DISPLAY_VALUE"])):?>
            <?=implode(" / ", $arProperty["DISPLAY_VALUE"]);?>
         <?else:?>
            <?=$arProperty["DISPLAY_VALUE"];?>
         <?endif?>
         </small><br />
      <?endforeach;?>
   </p>
<?endforeach;?>
<?if($arParams["DISPLAY_BOTTOM_PAGER"]):?>
   <br /><?=$arResult["NAV_STRING"]?>
<?endif;?>
</div>