[1.5]Count item number like wishlist for Cart on header link

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  <div class="links"><a href="<?php echo $home; ?>"><?php echo $text_home; ?></a><a href="<?php echo $wishlist; ?>" id="wishlist_total"><?php echo $text_wishlist; ?></a><a href="<?php echo $account; ?>"><?php echo $text_account; ?></a>
<a id="mini_cart" href="<?php echo $cart; ?>"><?php echo $text_cart; ?></a>
<!--Add id "mini_cart" to "Shopping Cart", So we can easily change the content by jQuery script -->
<a href="<?php echo $checkout; ?>"><?php echo $text_checkout; ?></a></div>

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function addToCart(product_id) {
	$.ajax({
		url: 'index.php?route=checkout/cart/update',
		type: 'post',
		data: 'product_id=' + product_id,
		dataType: 'json',
		success: function(json) {
			$('.success, .warning, .attention, .information, .error').remove();
			
			if (json['redirect']) {
				location = json['redirect'];
			}
			
			if (json['error']) {
				if (json['error']['warning']) {
					$('#notification').html('<div class="warning" style="display: none;">' + json['error']['warning'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
				}
			}	 
						
			if (json['success']) {
				$('#notification').html('<div class="attention" style="display: none;">' + json['success'] + '<img src="catalog/view/theme/default/image/close.png" alt="" class="close" /></div>');
				
				$('.attention').fadeIn('slow');
				
				$('#cart_total').html(json['total']);
[b]//ADD CODE DEGINNING-----------------------------------
				//Show goods Number after "Shopping Cart" nav, like this  Shopping Cart (num)
				var itemNumLength = json['total'].indexOf('item(s)')-1; 
//Get the beginning of string "item(s)", then get the length of goods num.			
				var itemNum = json['total'].substr( 0 , itemNumLength );	
//get the goods num in the cart
				//var miniCartContent = $('#mini_cart').html();
				$('#mini_cart').html('Shopping Cart ('+itemNum+')');
//END-------------------------------------- Only support one language.[/b]				$('html, body').animate({ scrollTop: 0 }, 'slow'); 
			}	
		}
	});
}

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function removeCart(key) {
	$.ajax({
		url: 'index.php?route=checkout/cart/update',
		type: 'post',
		data: 'remove=' + key,
		dataType: 'json',
		success: function(json) {
			$('.success, .warning, .attention, .information').remove();
			
			if (json['output']) {
				$('#cart_total').html(json['total']);
[b]//ADD CODE DEGINNING-----------------------------------
				//Show goods Number after "Shopping Cart" nav, like this  Shopping Cart (num)
				var itemNumLength = json['total'].indexOf('item(s)')-1; 
//Get the beginning of string "item(s)", then get the length of goods num.			
				var itemNum = json['total'].substr( 0 , itemNumLength );	
//get the goods num in the cart
				//var miniCartContent = $('#mini_cart').html();
				$('#mini_cart').html('Shopping Cart ('+itemNum+')');
//END-------------------------------------- Only support one language.[/b]				$('#cart .content').html(json['output']);
			}			
		}
	});
}