The path to template file was incorrect as per the comments on the question...
Is the path company/quotationitemprice/bundle/sales/order/items/renderer.phtml definitely correct? (i.e the folder company sits in app/design/frontend/package/theme/template?
Should be company/quotationitemprice/bundle/checkout/cart/item/renderer.phtml.
Step1: Create local.xml at
app/design/frontend/yourpackage/yourTemplate/layout/
add this code at this file:
<?xml version="1.0"?>
<layout version="0.1.0">
<default>
<reference name="header">
<block type="checkout/cart_sidebar" name="cart_sidebar_header" template="checkout/cart/sidebar.phtml" before="-">
<action method="addItemRender"><type>simple</type><block>checkout/cart_item_renderer</block><template>checkout/cart/sidebar/default.phtml</template></action>
<action method="addItemRender"><type>grouped</type><block>checkout/cart_item_renderer_grouped</block><template>checkout/cart/sidebar/default.phtml</template></action>
<action method="addItemRender"><type>configurable</type><block>checkout/cart_item_renderer_configurable</block><template>checkout/cart/sidebar/default.phtml</template></action>
<block type="core/text_list" name="cart_sidebar.extra_actions" as="extra_actions" translate="label" module="checkout">
<label>Shopping Cart Sidebar Extra Actions</label>
</block>
</block>
</reference>
</default>
</layout>
This code is call cart side bar to header section.
Step2: on header.phtml call this cart sidebar using below code :
<?php echo $this->getChildHtml('cart_sidebar_header');?>
then rest of you need to put your logic
[Update] I have update code for sidebar
<?php
$count=0;
if (Mage::helper('core')->isModuleOutputEnabled('Mage_Checkout')) {
$count = $this->helper('checkout/cart')->getSummaryCount();
if ($count >= 1) { $text = $this->__('Cart (%s)', $count); }
elseif ($count > 0) {$text = $this->__('Cart (%s)', $count); }
else { $text = $this->__('Cart (0)'); }
}?>
<div class="i_cart" onMouseOver="show_sidebar()" onMouseOut="hide_sidebar()">
<p class="item">MY CART</p>
<p class="cart_digit">
<?php echo $count; ?>
</p>
</div>
<script type="text/javascript">
function show_sidebar()
{
document.getElementById('headsidebar').style.display="block";
}
function hide_sidebar()
{
document.getElementById('headsidebar').style.display="noone";
}
</script>
<?php if ($this->getIsNeedToDisplaySideBar()):?>
<div class="block block-cart" id="headsidebar">
<?php $_cartQty = $this->getSummaryCount() ?>
<div class="block-title">
<strong><span><?php echo $this->__('My Cart') ?></span></strong>
</div>
<div class="block-content">
<?php if ($_cartQty>0): ?>
<div class="summary">
<?php if ($_cartQty==1): ?>
<p class="amount"><?php echo $this->__('There is <a href="%s">1 item</a> in your cart.', $this->getUrl('checkout/cart')) ?></p>
<?php else: ?>
<p class="amount"><?php echo $this->__('There are <a href="%s">%s items</a> in your cart.', $this->getUrl('checkout/cart'), $_cartQty) ?></p>
<?php endif ?>
<p class="subtotal">
<?php if ($this->canApplyMsrp()): ?>
<span class="map-cart-sidebar-total"><?php echo $this->__('ORDER TOTAL WILL BE DISPLAYED BEFORE YOU SUBMIT THE ORDER'); ?></span>
<?php else: ?>
<span class="label"><?php echo $this->__('Cart Subtotal:') ?></span> <?php echo Mage::helper('checkout')->formatPrice($this->getSubtotal()) ?>
<?php if ($_subtotalInclTax = $this->getSubtotalInclTax()): ?>
<br />(<?php echo Mage::helper('checkout')->formatPrice($_subtotalInclTax) ?> <?php echo Mage::helper('tax')->getIncExcText(true) ?>)
<?php endif; ?>
<?php endif; ?>
</p>
</div>
<?php endif ?>
<?php if($_cartQty && $this->isPossibleOnepageCheckout()): ?>
<div class="actions">
<?php echo $this->getChildHtml('extra_actions') ?>
<button type="button" title="<?php echo $this->__('Checkout') ?>" class="button" onclick="setLocation('<?php echo $this->getCheckoutUrl() ?>')"><span><span><?php echo $this->__('Checkout') ?></span></span></button>
</div>
<?php endif ?>
<?php $_items = $this->getRecentItems() ?>
<?php if(count($_items)): ?>
<p class="block-subtitle"><?php echo $this->__('Recently added item(s)') ?></p>
<ol id="cart-sidebar" class="mini-products-list">
<?php foreach($_items as $_item): ?>
<?php echo $this->getItemHtml($_item) ?>
<?php endforeach; ?>
</ol>
<script type="text/javascript">decorateList('cart-sidebar', 'none-recursive')</script>
<?php else: ?>
<p class="empty"><?php echo $this->__('You have no items in your shopping cart.') ?></p>
<?php endif ?>
</div>
</div>
<?php endif;?>
Best Answer
I have seen similar behavior when someone hard codes a session key in a link somewhere (often it happens in an email newsletter, which is just a mess). Make sure your site's links do not have hard coded session keys in them.