add this block {{block type="catalog/product_recentviewed" catagory_id ="28" template="catalog/product/recentviewd.phtml"}} to home cms page now create file \app\code\local\Mage\Catalog\Block\Product\Recentviewed.php add below code

<?php

 class Mage_Catalog_Block_Product_Recentviewed extends Mage_Catalog_Block_Product_Abstract
{
    protected $_collection;
    protected $_indexName       = 'reports/product_index_viewed';
    
    public function getProductCollection()
    {
        $categoryId = $this->getData('catagory_id');
        if (is_null($this->_collection)) {
            $attributes = Mage::getSingleton('catalog/config')->getProductAttributes();

            $this->_collection =  Mage::getModel('reports/product_index_viewed')
                ->getCollection()
                ->addAttributeToSelect($attributes);

                if ($this->getCustomerId()) {
                    $this->_collection->setCustomerId($this->getCustomerId());
                }
                $this->_collection->excludeProductIds(Mage::getModel('reports/product_index_viewed')->getExcludeProductIds())
                    ->addUrlRewrite()
                    ->setPageSize($this->getPageSize())
                    ->setCurPage(1);

            /* Price data is added to consider item stock status using price index */
            $this->_collection->addPriceData();
            $category = Mage::getModel('catalog/category')->load($categoryId)->getProductCollection();
            $ids = array();
            foreach($category as $cat)
            {
                $ids[]= $cat->getEntityId();
            } 
            $this->_collection->addFilterByIds($ids);
            $this->_collection->setAddedAtOrder();
            if ($this-> _useProductIdsOrder && is_array($ids)) {
                $this->_collection->setSortIds($ids);
            }

            Mage::getSingleton('catalog/product_visibility')
                ->addVisibleInSiteFilterToCollection($this->_collection);
        
        }
        
        
        return $this->_collection;
    }
    
     public function getPageSize()
    {
        if ($this->hasData('page_size')) {
            return $this->getData('page_size');
        }
        return 5;
    }
} 
// ab gujarati

now create .phtml file at app\design\frontend\default\default\template\catalog\product\recentviewd.phtml

add below code

<?php //ab gujarati ?>
 <?php if (($_products = $this->getProductCollection()) && $_products->getSize()): ?>
<div class=" most_viewed">
<div class="mv_title"><?php echo $this->__('Most Popular Products') ?></div>
<?php $_collectionSize = 5;//count($_products->getItems()); echo $_collectionSize; ?>
<ul class="products-grid" id="products-grid-table">
<?php $i=1; foreach ($_products->getItems() as $_product): ?>
    <li id="td_<?php echo $i;?>" <?php if($i%5==0 or $i==$_collectionSize){echo 'class="last"';} ?> >
        <div id="cont_<?php echo $i;?>">        
            <a class="product-image" href="<?php echo $_product->getProductUrl() ?>" title="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>">
                <img src="<?php echo $this->helper('catalog/image')->init($_product, 'small_image')->resize(135); ?>" width="135" height="135" alt="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>" title="<?php echo $this->htmlEscape($this->getImageLabel($_product, 'small_image')) ?>" />
            </a>
                <div class="home-ratings"> <?php echo $this->getReviewsSummaryHtml($_product, 'short') ?></div>
            <h3 class="product-name"><a href="<?php echo $_product->getProductUrl() ?>" title="<?php echo $this->htmlEscape($_product->getName()) ?>"><?php echo $this->htmlEscape($_product->getName()) ?></a></h3>
            <div class="a-center">                        

                <?php echo $this->getPriceHtml($_product, true) ?>
                <?php if($_product->isSaleable()): ?>
                    <button class="button1" onclick="setLocation('<?php echo $this->getAddToCartUrl($_product) ?>')"><span><span><span><?php echo $this->__('Add to Bag') ?></span></span></span></button>
                    <div class="clear"></div>
                <?php else: ?>
                    <p class="availability"><span class="out-of-stock"><?php echo $this->__('Out of stock') ?></span></p>
                    <div class="clear"></div>
                <?php endif; ?>
                <?php /*?><ul class="add-to-links">
                    <?php if ($this->helper('wishlist')->isAllow()) : ?>
                    <li><a href="<?php echo $this->helper('wishlist')->getAddUrl($_product) ?>"><?php echo $this->__('Add to Wishlist') ?></a></li>
                    <?php endif; ?>
                    <?php //ab gujarati ?>
                    <?php if($_compareUrl=$this->getAddToCompareUrl($_product)): ?>
                    <li class="last"><span class="separator">|</span> <a href="<?php echo $_compareUrl ?>"><?php echo $this->__('Add to Compare') ?></a></li>
                    <?php endif; ?>
                </ul><?php */?>
            </div>
        </div>
    </li>
<?php $i++; endforeach; $kol = $_collectionSize; ?>
</ul>
</div>
<?php endif; ?>
<?php //ab?>

please vote.

first copy new.php file from app\code\core\Mage\Catalog\Block\Product\New.php to app\code\local\Mage\Catalog\Block\Product\New.php

now edit this file near line 88

protected function _getProductCollection()
{
...............
// put  here code line is near 122 
$category = Mage::getModel('catalog/category')->load($this->getData('catagory_id'));
$collection->addCategoryFilter($category);
// code end
return $collection;
}

now add block in home page cms {{block type="catalog/product_new" catagory_id="28" template="catalog/product/new.phtml"}} here 28 is my category id put multiple blcok like above and chanege catagory_id for diffent categories

please vote