How would one go about filtering magento's related products block to show only in stock products?
<?php foreach($this->getItems() as $_item): ?>
<li class="item">
<?php if(!$_item->isComposite() && $_item->isSaleable()): ?>
<?php if (!$_item->getRequiredOptions()): ?>
<input type="checkbox" class="checkbox related-checkbox" id="related-checkbox<?php echo $_item->getId() ?>" name="related_products[]" value="<?php echo $_item->getId() ?>" />
<?php endif; ?>
<?php endif; ?>
<div class="product">
<a href="<?php echo $_item->getProductUrl() ?>" title="<?php echo $this->htmlEscape($_item->getName()) ?>" class="product-image"><img src="<?php echo $this->helper('catalog/image')->init($_item, 'thumbnail')->resize(50) ?>" width="50" height="50" alt="<?php echo $this->htmlEscape($_item->getName()) ?>" /></a>
<div class="product-details">
<p class="product-name"><a href="<?php echo $_item->getProductUrl() ?>"><?php echo $this->htmlEscape($_item->getName()) ?></a></p>
<?php echo $this->getPriceHtml($_item, true, '-related') ?>
<?php if ($this->helper('wishlist')->isAllow()) : ?>
<a href="<?php echo $this->getAddToWishlistUrl($_item) ?>" class="link-wishlist"><?php echo $this->__('Add to Wishlist') ?></a>
<?php endif; ?>
</div>
</div>
</li>
<?php endforeach ?>
I've uploaded my current iteration of magentos realted.phtml to github: