First you will have to create a K2 template override (read here:
getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates how they work) then you will have to modify item.php file, locate this code
<?php if($this->item->params->get('itemImageGallery') && !empty($this->item->gallery)): ?>
<!-- Item image gallery -->
<a name="itemImageGalleryAnchor" id="itemImageGalleryAnchor"></a>
<div class="itemImageGallery">
<h3><?php echo JText::_('K2_IMAGE_GALLERY'); ?></h3>
<?php echo $this->item->gallery; ?>
</div>
<?php endif; ?>
[code]
and move it right under this code
[code]
<?php if($this->item->params->get('itemImage') && !empty($this->item->image)): ?>
<!-- Item Image -->
<div class="itemImageBlock">
<span class="itemImage">
<a class="modal" rel="{handler: 'image'}" href="<?php echo $this->item->imageXLarge; ?>" title="<?php echo JText::_('K2_CLICK_TO_PREVIEW_IMAGE'); ?>">
<img src="<?php echo $this->item->image; ?>" alt="<?php if(!empty($this->item->image_caption)) echo K2HelperUtilities::cleanHtml($this->item->image_caption); else echo K2HelperUtilities::cleanHtml($this->item->title); ?>" style="width:<?php echo $this->item->imageWidth; ?>px; height:auto;" />
</a>
</span>
<?php if($this->item->params->get('itemImageMainCaption') && !empty($this->item->image_caption)): ?>
<!-- Image caption -->
<span class="itemImageCaption"><?php echo $this->item->image_caption; ?></span>
<?php endif; ?>
<?php if($this->item->params->get('itemImageMainCredits') && !empty($this->item->image_credits)): ?>
<!-- Image credits -->
<span class="itemImageCredits"><?php echo $this->item->image_credits; ?></span>
<?php endif; ?>
<div class="clr"></div>
</div>
<?php endif; ?>
Note: If your template already has a com_k2 folder located in your template folder under html folder ignore the part where you create a K2 template override.
