diff --git a/admin-dev/themes/default/template/controllers/cart_rules/product_rule.tpl b/admin-dev/themes/default/template/controllers/cart_rules/product_rule.tpl
index d0847c234..f33f11a01 100644
--- a/admin-dev/themes/default/template/controllers/cart_rules/product_rule.tpl
+++ b/admin-dev/themes/default/template/controllers/cart_rules/product_rule.tpl
@@ -28,6 +28,10 @@
 
 <script type="text/javascript">
 	$('#product_rule_{$product_rule_group_id|intval}_{$product_rule_id|intval}_choose_content').parent().hide();
-	$("#product_rule_{$product_rule_group_id|intval}_{$product_rule_id|intval}_choose_link").fancybox();
+	$("#product_rule_{$product_rule_group_id|intval}_{$product_rule_id|intval}_choose_link").fancybox({
+		autoDimensions: false,
+		autoSize: false,
+		width: 600,
+		height: 250});
 	$(document).ready(function() { updateProductRuleShortDescription($('#product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_add')); });
 </script>
\ No newline at end of file
diff --git a/admin-dev/themes/default/template/controllers/cart_rules/product_rule_itemlist.tpl b/admin-dev/themes/default/template/controllers/cart_rules/product_rule_itemlist.tpl
index bb83283db..5fb6da3ba 100644
--- a/admin-dev/themes/default/template/controllers/cart_rules/product_rule_itemlist.tpl
+++ b/admin-dev/themes/default/template/controllers/cart_rules/product_rule_itemlist.tpl
@@ -1,11 +1,12 @@
 <div class="col-lg-12 bootstrap">
 	<div class="col-lg-6">
 		{l s='Unselected'}
-		<select multiple id="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_1">
+		<select multiple size="10" id="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_1">
 			{foreach from=$product_rule_itemlist.unselected item='item'}
 				<option value="{$item.id|intval}">&nbsp;{$item.name}</option>
 			{/foreach}
 		</select>
+		<div class="clearfix">&nbsp;</div>
 		<a id="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_add" class="btn btn-default btn-block" >
 			{l s='Add'}
 			<i class="icon-arrow-right"></i>
@@ -13,11 +14,12 @@
 	</div>
 	<div class="col-lg-6">
 		{l s='Selected'}
-		<select multiple name="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}[]" id="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_2" class="product_rule_toselect" >
+		<select multiple size="10" name="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}[]" id="product_rule_select_{$product_rule_group_id|intval}_{$product_rule_id|intval}_2" class="product_rule_toselect" >
 			{foreach from=$product_rule_itemlist.selected item='item'}
 				<option value="{$item.id|intval}">&nbsp;{$item.name}</option>
 			{/foreach}
 		</select>
+		<div class="clearfix">&nbsp;</div>
 		<a id="product_rule_select_{$product_rule_group_id}_{$product_rule_id}_remove" class="btn btn-default btn-block" >
 			<i class="icon-arrow-left"></i>
 			{l s='Remove'}
diff --git a/classes/ProductSale.php b/classes/ProductSale.php
index d24400f5d..6830f628e 100644
--- a/classes/ProductSale.php
+++ b/classes/ProductSale.php
@@ -89,7 +89,8 @@ class ProductSaleCore
 	
 		$ids = array();
 		foreach ($products as $product)
-			$ids[$product['id_product']] = 1;
+			if (Validate::isUnsignedId($product['id_product']))
+				$ids[$product['id_product']] = 1;
 		$ids = array_keys($ids);
 		$ids = array_filter($ids);
 		sort($ids);