Спасибо за ответ, Екатерина. В конце-концов было было сделано через "_blank":
[B]<a href="<?=$arItem[PROPERTY_13]?>" target="_blank">[/B]
<span class="img-holder">
<span class="zoom">zoom</span>
<img src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="220" alt="image description" />
</span>
<strong class="title"><?=$arItem["NAME"]?></strong>
</a>
</li>
<?endforeach;?>
</ul>
</div>
</div>
<div id="myCanvasContainer">
<canvas width="867" height="300" id="myCanvas">
<p>Anything in here will be replaced on browsers that support the canvas element</p>
</canvas>
</div>
<div id="tags" style="display: none">
<ul>
<?foreach($arResult["ITEMS"] as $arItem):?>
<?
if ($arItem[PROPERTY_14]==1){
$this->AddEditAction($arItem['ID'], $arItem['EDIT_LINK'], CIBlock::GetArrayByID($arItem["IBLOCK_ID"], "ELEMENT_EDIT"));
$this->AddDeleteAction($arItem['ID'], $arItem['DELETE_LINK'], CIBlock::GetArrayByID($arItem["IBLOCK_ID"], "ELEMENT_DELETE"), array("CONFIRM" => GetMessage('CT_BNL_ELEMENT_DELETE_CONFIRM')));
?>
<li >
[B] <a href="<?=$arItem[PROPERTY_13]?>" target="_blank">[/B]
<img src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="40px" height="40px">
[B]<a href="<?=$arItem[PROPERTY_13]?>" target="_blank">[/B]
<span class="img-holder">
<span class="zoom">zoom</span>
<img src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="220" alt="image description" />
</span>
<strong class="title"><?=$arItem["NAME"]?></strong>
</a>
</li>
<?endforeach;?>
</ul>
</div>
</div>
<div id="myCanvasContainer">
<canvas width="867" height="300" id="myCanvas">
<p>Anything in here will be replaced on browsers that support the canvas element</p>
</canvas>
</div>
<div id="tags" style="display: none">
<ul>
<?foreach($arResult["ITEMS"] as $arItem):?>
<?
if ($arItem[PROPERTY_14]==1){
$this->AddEditAction($arItem['ID'], $arItem['EDIT_LINK'], CIBlock::GetArrayByID($arItem["IBLOCK_ID"], "ELEMENT_EDIT"));
$this->AddDeleteAction($arItem['ID'], $arItem['DELETE_LINK'], CIBlock::GetArrayByID($arItem["IBLOCK_ID"], "ELEMENT_DELETE"), array("CONFIRM" => GetMessage('CT_BNL_ELEMENT_DELETE_CONFIRM')));
?>
<li >
[B] <a href="<?=$arItem[PROPERTY_13]?>" target="_blank">[/B]
<img src="<?=$arItem["PREVIEW_PICTURE"]["SRC"]?>" width="40px" height="40px">