diff --git a/service/Application/Home/View/Default/Cart/Index.html b/service/Application/Home/View/Default/Cart/Index.html
index 5ecfba293..ddc24b3d9 100755
--- a/service/Application/Home/View/Default/Cart/Index.html
+++ b/service/Application/Home/View/Default/Cart/Index.html
@@ -124,6 +124,10 @@
     </notempty>
 </div>
 
+<!-- nav start -->
+<include file="Public/Nav" />
+<!-- nav end -->
+
 <!-- footer start -->
 <include file="Public/Footer" />
 <!-- footer end -->
diff --git a/service/Application/Home/View/Default/Category/Index.html b/service/Application/Home/View/Default/Category/Index.html
index 75d9ea9c6..8462fed6f 100755
--- a/service/Application/Home/View/Default/Category/Index.html
+++ b/service/Application/Home/View/Default/Category/Index.html
@@ -49,6 +49,10 @@
     </notempty>
 </div>
 
+<!-- nav start -->
+<include file="Public/Nav" />
+<!-- nav end -->
+
 <!-- footer start -->
 <include file="Public/Footer" />
 <!-- footer end -->
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/Index/Index.html b/service/Application/Home/View/Default/Index/Index.html
index 9dc06103b..3904e7201 100755
--- a/service/Application/Home/View/Default/Index/Index.html
+++ b/service/Application/Home/View/Default/Index/Index.html
@@ -113,89 +113,87 @@
 </div>
 
 <!-- 主内容 -->
-<div class="shopMainbg">
-	<div class="shopMain" id="shopmain">
-		<!-- 楼层 -->
-		<if condition="!empty($goods_floor_list)">
-            <foreach name="goods_floor_list" item="floor">
-            	<if condition="isset($floor['is_home_recommended']) and $floor['is_home_recommended'] eq 1">
-					<div id="floor{{$key+1}}">
-						<div class="am-container">
-							<div class="items-nav-title">
-								<h4>{{$floor.name}}</h4>
-								<h3>{{$floor.vice_name}}</h3>
-								<div class="today-brands ">
-									<if condition="!empty($floor['items'])">
-                						<foreach name="floor.items" key="key" item="category">
-                							<if condition="!empty($category['items'])">
-		                						<foreach name="category.items" key="keys" item="categorys">
-		                							<if condition="$key lt 6 and $keys eq 0 and isset($categorys['is_home_recommended']) and $categorys['is_home_recommended'] eq 1">
-														<a href="{{:U('Home/Search/Index', ['category_id'=>$categorys['id']])}}">{{$categorys.name}}</a>
-													</if>
-												</foreach>
-											</if>
-										</foreach>
-									</if>
-								</div>
-								<span class="more">
-			            			<a href="{{:U('Home/Search/Index', ['category_id'=>$floor['id']])}}">更多<i class="am-icon-angle-right" style="padding-left:10px ;" ></i></a>
-			                	</span>
+<div class="home-floor">
+	<!-- 楼层 -->
+	<if condition="!empty($goods_floor_list)">
+        <foreach name="goods_floor_list" item="floor">
+        	<if condition="isset($floor['is_home_recommended']) and $floor['is_home_recommended'] eq 1">
+				<div id="floor{{$key+1}}">
+					<div class="am-container">
+						<div class="items-nav-title">
+							<h4>{{$floor.name}}</h4>
+							<h3>{{$floor.vice_name}}</h3>
+							<div class="today-brands ">
+								<if condition="!empty($floor['items'])">
+            						<foreach name="floor.items" key="key" item="category">
+            							<if condition="!empty($category['items'])">
+	                						<foreach name="category.items" key="keys" item="categorys">
+	                							<if condition="$key lt 6 and $keys eq 0 and isset($categorys['is_home_recommended']) and $categorys['is_home_recommended'] eq 1">
+													<a href="{{:U('Home/Search/Index', ['category_id'=>$categorys['id']])}}">{{$categorys.name}}</a>
+												</if>
+											</foreach>
+										</if>
+									</foreach>
+								</if>
 							</div>
-						</div>
-						
-						<div class="am-g am-g-fixed flood" <if condition="!empty($floor['bg_color'])">style="background-color:{{$floor.bg_color}};"<else />style="background-color:#eaeaea;"</if>>
-							<div class="am-u-sm-5 am-u-md-4 text-one list" >
-								<div class="word">
-									<if condition="!empty($floor['items'])">
-                						<foreach name="floor.items" item="category">
-                							<if condition="$key lt 6 and isset($category['is_home_recommended']) and $category['is_home_recommended'] eq 1">
-												<a href="{{:U('Home/Search/Index', ['category_id'=>$category['id']])}}" class="outer">
-													<span class="inner">
-														<b class="text">{{:mb_substr($category['name'], 0, 4, 'utf-8')}}</b>
-													</span>
-												</a>
-											</if>
-										</foreach>
-									</if>			
-								</div>
-								<a href="{{:U('Home/Search/Index', ['category_id'=>$floor['id']])}}">
-									<div class="outer-con">
-										<div class="describe">{{$floor.describe}}</div>
-									</div>
-									<if condition="!empty($floor['big_images'])">
-				                        <img src="{{$floor.big_images}}" />
-				                    </if>
-								</a>
-								<div class="triangle-topright"></div>
-							</div>
-
-							<if condition="!empty($floor.goods)">
-				                <foreach name="floor.goods" item="goods">
-									<div class="goods-items <if condition="in_array($key, [0,1])">am-u-sm-7 am-u-md-4 text-two<else />am-u-sm-6 am-u-md-2 text-three</if>  <if condition="in_array($key, [0,3])">sug</if> <if condition="in_array($key, [2,5])">big</if> <if condition="$key eq 5">last</if>">
-										<div class="outer-con">
-											<div class="goods-title ellipsis">
-												<a href="{{$goods['goods_url']}}" <notempty name="goods.title_color">style="color:{{$goods.title_color}};"</notempty>>{{$goods.title}}</a>
-											</div>
-											<div class="price">￥{{$goods.price}}</div>
-										</div>
-										<a href="{{$goods['goods_url']}}">
-											<img src="{{$goods.home_recommended_images}}" />
-										</a>
-									</div>
-				                </foreach>
-				            </if>
+							<span class="more">
+		            			<a href="{{:U('Home/Search/Index', ['category_id'=>$floor['id']])}}">更多<i class="am-icon-angle-right" style="padding-left:10px ;" ></i></a>
+		                	</span>
 						</div>
 					</div>
-				</if>
-			</foreach>
-		</if>
-	</div>
-</div>
+					
+					<div class="am-g am-g-fixed flood" <if condition="!empty($floor['bg_color'])">style="background-color:{{$floor.bg_color}};"<else />style="background-color:#eaeaea;"</if>>
+						<div class="am-u-sm-5 am-u-md-4 text-one list" >
+							<div class="word">
+								<if condition="!empty($floor['items'])">
+            						<foreach name="floor.items" item="category">
+            							<if condition="$key lt 6 and isset($category['is_home_recommended']) and $category['is_home_recommended'] eq 1">
+											<a href="{{:U('Home/Search/Index', ['category_id'=>$category['id']])}}" class="outer">
+												<span class="inner">
+													<b class="text">{{:mb_substr($category['name'], 0, 4, 'utf-8')}}</b>
+												</span>
+											</a>
+										</if>
+									</foreach>
+								</if>			
+							</div>
+							<a href="{{:U('Home/Search/Index', ['category_id'=>$floor['id']])}}">
+								<div class="outer-con">
+									<div class="describe">{{$floor.describe}}</div>
+								</div>
+								<if condition="!empty($floor['big_images'])">
+			                        <img src="{{$floor.big_images}}" />
+			                    </if>
+							</a>
+							<div class="triangle-topright"></div>
+						</div>
 
-<!-- footer start -->
-<include file="Public/Footer" />
-<!-- footer end -->
+						<if condition="!empty($floor.goods)">
+			                <foreach name="floor.goods" item="goods">
+								<div class="goods-items <if condition="in_array($key, [0,1])">am-u-sm-7 am-u-md-4 text-two<else />am-u-sm-6 am-u-md-2 text-three</if>  <if condition="in_array($key, [0,3])">sug</if> <if condition="in_array($key, [2,5])">big</if> <if condition="$key eq 5">last</if>">
+									<div class="outer-con">
+										<div class="goods-title ellipsis">
+											<a href="{{$goods['goods_url']}}" <notempty name="goods.title_color">style="color:{{$goods.title_color}};"</notempty>>{{$goods.title}}</a>
+										</div>
+										<div class="price">￥{{$goods.price}}</div>
+									</div>
+									<a href="{{$goods['goods_url']}}">
+										<img src="{{$goods.home_recommended_images}}" />
+									</a>
+								</div>
+			                </foreach>
+			            </if>
+					</div>
+				</div>
+			</if>
+		</foreach>
+	</if>
+</div>
 
 <!-- nav start -->
 <include file="Public/Nav" />
-<!-- nav end -->
\ No newline at end of file
+<!-- nav end -->
+
+<!-- footer start -->
+<include file="Public/Footer" />
+<!-- footer end -->
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/Public/Common.html b/service/Application/Home/View/Default/Public/Common.html
deleted file mode 100755
index ad26c4e05..000000000
--- a/service/Application/Home/View/Default/Public/Common.html
+++ /dev/null
@@ -1,11 +0,0 @@
-<!-- delete html start -->
-<div class="am-modal am-modal-confirm" tabindex="-1" id="common-confirm-delete">
-	<div class="am-modal-dialog am-radius">
-		<div class="am-modal-bd">{{:L('common_delete_tips')}}</div>
-		<div class="am-modal-footer">
-			<span class="am-modal-btn" data-am-modal-cancel>{{:L('common_operation_cancel')}}</span>
-			<span class="am-modal-btn" data-am-modal-confirm>{{:L('common_operation_confirm')}}</span>
-		</div>
-	</div>
-</div>
-<!-- delete html end -->
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/Public/Nav.html b/service/Application/Home/View/Default/Public/Nav.html
index 220235671..88075a85f 100755
--- a/service/Application/Home/View/Default/Public/Nav.html
+++ b/service/Application/Home/View/Default/Public/Nav.html
@@ -1,14 +1,14 @@
-<div class="navCir">
-    <li class="active">
+<div class="mobile-navigation">
+    <li <if condition="strtolower(CONTROLLER_NAME.ACTION_NAME) eq 'indexindex'">class="active"</if>>
         <a href="{{:__MY_URL__}}"><i class="am-icon-home"></i>首页</a>
     </li>
-    <li>
+    <li <if condition="strtolower(CONTROLLER_NAME.ACTION_NAME) eq 'categoryindex'">class="active"</if>>
         <a href="{{:U('Home/Category/Index')}}"><i class="am-icon-list"></i>分类</a>
     </li>
-    <li>
+    <li <if condition="strtolower(CONTROLLER_NAME.ACTION_NAME) eq 'cartindex'">class="active"</if>>
         <a <if condition="empty($user)">href="javascript:;" class="login-event"<else /> href="{{:U('Home/Cart/Index')}}"</if>><i class="am-icon-shopping-basket"></i>购物车</a>
     </li>
-    <li>
+    <li <if condition="strtolower(CONTROLLER_NAME.ACTION_NAME) eq 'userindex'">class="active"</if>>
         <a <if condition="empty($user)">href="javascript:;" class="login-event"<else /> href="{{:U('Home/User/Index')}}"</if>><i class="am-icon-user"></i>我的</a>
     </li>
 </div>
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/Public/NavBar.html b/service/Application/Home/View/Default/Public/NavBar.html
deleted file mode 100755
index 5f836517a..000000000
--- a/service/Application/Home/View/Default/Public/NavBar.html
+++ /dev/null
@@ -1 +0,0 @@
-<button class="am-topbar-btn am-topbar-toggle am-btn am-btn-sm am-btn-success am-show-sm-only" data-am-collapse="{target: '#doc-topbar-collapse'}"><span class="am-sr-only">{{:L('nav_switch_text')}}</span> <span class="am-icon-bars"></span></button>
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/Public/UserNav.html b/service/Application/Home/View/Default/Public/UserNav.html
deleted file mode 100755
index 59a09947d..000000000
--- a/service/Application/Home/View/Default/Public/UserNav.html
+++ /dev/null
@@ -1,25 +0,0 @@
-<div class="am-topbar-right">
-	<empty name="user">
-		<if condition="MyC('home_user_login_state') eq 1">
-			<a href="{{:U('Home/User/LoginInfo')}}" class="am-btn am-btn-secondary am-topbar-btn am-btn-sm am-radius"><span class="am-icon-user"></span> {{:L('common_login_text')}}</a>
-		</if>
-		<if condition="in_array('sms', MyC('home_user_reg_state'))">
-			<a href="{{:U('Home/User/RegInfo')}}" class="am-btn am-btn-success am-topbar-btn am-btn-sm am-radius user-nav-reg-submit"><span class="am-icon-pencil"></span> {{:L('common_reg_text')}}</a>
-		<elseif condition="in_array('email', MyC('home_user_reg_state'))" />
-			<a href="{{:U('Home/User/EmailRegInfo')}}" class="am-btn am-btn-success am-topbar-btn am-btn-sm am-radius user-nav-reg-submit"><span class="am-icon-pencil"></span> {{:L('common_reg_text')}}</a>
-		</if>
-	<else />
-		<div class="am-dropdown user-header-nav" data-am-dropdown="{boundary: '.am-topbar'}">
-			<button class="am-btn am-btn-secondary am-topbar-btn am-btn-sm am-dropdown-toggle am-radius" data-am-dropdown-toggle><if condition="empty($user['nickname'])">{{:L('common_user_home_text')}}<else />{{$user.nickname}}</if> <span class="am-icon-caret-down"></span></button>
-			<ul class="am-dropdown-content am-radius">
-				<foreach name="user_nav_menu" item="v">
-					<if condition="$v['is_show'] eq 1">
-						<li <if condition="(strtolower(CONTROLLER_NAME.ACTION_NAME) eq strtolower($v['control'].$v['action'])) or (isset(L('user_left_menu_hidden_active')[strtolower(CONTROLLER_NAME.ACTION_NAME)]) and strtolower(L('user_left_menu_hidden_active')[strtolower(CONTROLLER_NAME.ACTION_NAME)]) eq strtolower($v['control'].$v['action']))">class="am-active"</if>>
-							<a href="{{:U('Home/'.$v['control'].'/'.$v['action'])}}"><if condition="!empty($v['icon'])"><i class="{{$v.icon}}"></i></if> {{$v.name}}</a>
-						</li>
-					</if>
-				</foreach>
-			</ul>
-		</div>
-	</empty>
-</div>
\ No newline at end of file
diff --git a/service/Application/Home/View/Default/User/Index.html b/service/Application/Home/View/Default/User/Index.html
index 7709b0a61..3ecf61717 100755
--- a/service/Application/Home/View/Default/User/Index.html
+++ b/service/Application/Home/View/Default/User/Index.html
@@ -28,6 +28,10 @@
     <!-- content end -->
 </div>
 
+<!-- nav start -->
+<include file="Public/Nav" />
+<!-- nav end -->
+
 <!-- footer start -->
 <include file="Public/Footer" />
 <!-- footer end -->
\ No newline at end of file
diff --git a/service/Application/Service/BuyService.class.php b/service/Application/Service/BuyService.class.php
index 22591f7b3..909e55030 100755
--- a/service/Application/Service/BuyService.class.php
+++ b/service/Application/Service/BuyService.class.php
@@ -86,6 +86,10 @@ class BuyService
         } else {
             $data['upd_time'] = time();
             $data['stock'] += $temp['stock'];
+            if($data['stock'] > $goods['inventory'])
+            {
+                $data['stock'] = $goods['inventory'];
+            }
             if($m->where($where)->save($data))
             {
                 return DataReturn(L('common_join_success'), 0, self::CartTotal($params));
diff --git a/service/Public/Home/Default/Css/Cart.css b/service/Public/Home/Default/Css/Cart.css
index edbe38191..453b02d2f 100755
--- a/service/Public/Home/Default/Css/Cart.css
+++ b/service/Public/Home/Default/Css/Cart.css
@@ -46,7 +46,7 @@ strong.total-price-content, .selected-tips strong, .nav-total-price { color: #d2
     .nav-right { width: 70%; }
     .cart-nav, .nav-left, .nav-right { overflow: hidden; }
     .nav-right .nav-total-price { display: block;
-    width: calc(100% - 120px); height: 30px; -o-text-overflow: ellipsis; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
+    width: calc(100% - 122px); height: 30px; -o-text-overflow: ellipsis; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
     .cart-nav .separate-submit { float: right; width: 80px; }
     .wap-base { padding-left: 20px; }
 
@@ -54,4 +54,6 @@ strong.total-price-content, .selected-tips strong, .nav-total-price { color: #d2
     .goods-detail img { width: 40px; height: 40px; }
     .goods-base { margin-left: 45px; }
     .stock-tag { width: 85px; }
+
+    .am-footer { padding-bottom: 55px; }
 }
\ No newline at end of file
diff --git a/service/Public/Home/Default/Css/Category.css b/service/Public/Home/Default/Css/Category.css
index 9fec0f835..a5cba1517 100755
--- a/service/Public/Home/Default/Css/Category.css
+++ b/service/Public/Home/Default/Css/Category.css
@@ -10,4 +10,7 @@
 }
 @media only screen and (max-width:1025px)  {
     .am-accordion-gapped { margin: 0 5px; }
+}
+@media only screen and (max-width:640px)  {
+    .am-footer { padding-bottom: 55px; }
 }
\ No newline at end of file
diff --git a/service/Public/Home/Default/Css/Common.css b/service/Public/Home/Default/Css/Common.css
index 54cdbc208..752fbd29d 100755
--- a/service/Public/Home/Default/Css/Common.css
+++ b/service/Public/Home/Default/Css/Common.css
@@ -107,10 +107,11 @@ color: #F5F5F2;font-size: 14px;cursor:pointer;border-radius:0px 0px ;}
 .tip{ display:none}
 
 
-.navCir{position: fixed;bottom:0px ;width: 100%;z-index: 999;background:#fff ;}
-.navCir li{width: 25%;padding:5px ;background:#fff ;border-top:1px solid #f5f5f5 ;float: left;text-align: center;font-size: 14px;}
-.navCir li i{display: block;font-size: 18px;}
-.navCir li.active a{color:#d2364c ;}
+.mobile-navigation{position: fixed;bottom:0px ;width: 100%;z-index: 999;background:#fff ;}
+.mobile-navigation li{width: 25%;padding:2px ;background:#fff ;border-top:1px solid #f5f5f5 ;float: left;text-align: center;font-size: 12px;}
+.mobile-navigation li a { text-decoration: none; }
+.mobile-navigation li i{display: block;font-size: 16px;}
+.mobile-navigation li.active a{color:#d2364c ;}
 
 
 @media only screen and (max-width: 640px) {
@@ -135,7 +136,7 @@ color: #F5F5F2;font-size: 14px;cursor:pointer;border-radius:0px 0px ;}
     #ai-topsearch {height: 36px;}
     .search-bar input {width: 80%;height:36px;} 
     .classified{display:none;}
-    .navCir{display:none;}
+    .mobile-navigation{display:none;}
     .nav-search{ position:relative;top:0px;z-index:0;margin-bottom: 5px;margin-top: 5px;}
      #ai-topsearch{ font-size:18px;height: 36px;}
      /*底部*/
@@ -179,7 +180,7 @@ color: #F5F5F2;font-size: 14px;cursor:pointer;border-radius:0px 0px ;}
     .nav-cont li a {font-size: 16px;color: #333;line-height: 36px;margin-left: -1px;padding: 0 25px;text-decoration: none;font-weight: 700;display: inline-block;vertical-align: middle;}
     .nav-cont li a:hover { color:#d2364c; }
 
-    .nav-cont .nav-extra{position: absolute;right:0px ;top:6px;font-size: 16px;line-height:33px;height:33px ;width:120px;text-align:center;background: #e1363f;cursor: pointer;}
+    .nav-cont .nav-extra{position: absolute;right:0px ;top:6px;font-size: 14px;line-height:33px;height:33px ;width:110px;text-align:center;background: #e1363f;cursor: pointer;}
     .nav-cont .nav-extra .nav-user{background:#e0313b; width: 33px;height: 33px;border-radius: 33px;position: absolute;left:-28px;z-index: 2;padding: 1px;overflow: hidden;}
     .nav-cont .nav-extra b{display:block;position: absolute;width: 40px;height: 40px;border-radius:45px;z-index: 1;left: -31px;top: -4px;background: #fff;}
     .nav-cont .nav-extra .am-icon-angle-right { margin-left: 5px; }
@@ -651,7 +652,7 @@ background:url(../Images/ibar_sprites.png) no-repeat;background-position:0px -23
 /**
  * 用户中心布局样式
  */
-.user-menu {position:fixed;z-index:10;bottom:30px;right:20px;}
+.user-menu {position:fixed;z-index:10;bottom:70px;right:10px;}
 .user-sidebar {width:145px;min-height:100%;float:left;}
 .user-sidebar .am-active {z-index:1600;}
 .user-sidebar .am-active a, .user-sidebar-list li a:hover {background:#fff1f5; text-decoration: none; color: #d2364c; }
diff --git a/service/Public/Home/Default/Css/Index.css b/service/Public/Home/Default/Css/Index.css
index 44d6f6d7b..a1822677a 100755
--- a/service/Public/Home/Default/Css/Index.css
+++ b/service/Public/Home/Default/Css/Index.css
@@ -146,7 +146,7 @@ text-align: center;float:none}
     .items-nav-title{background: #fff;}
     .hmtop{background: #fff;}
     .am-container {padding-left:0px;padding-right:0px ;}
-    .shopMainbg{width:100%;background:#fff;overflow:visible;}
+    .home-floor{width:100%;background:#fff;overflow:visible;}
 
     /*主题布局*/
     .pro-title{ font-size:14px;}
diff --git a/service/Public/Home/Default/Css/User.Index.css b/service/Public/Home/Default/Css/User.Index.css
new file mode 100644
index 000000000..f36c3bcb1
--- /dev/null
+++ b/service/Public/Home/Default/Css/User.Index.css
@@ -0,0 +1,3 @@
+@media only screen and (max-width:640px)  {
+    .am-footer { padding-bottom: 55px; }
+}
\ No newline at end of file
diff --git a/service/Public/Home/Default/Images/home-mini-nav-cart-icon.png b/service/Public/Home/Default/Images/home-mini-nav-cart-icon.png
new file mode 100755
index 000000000..72bccfa6f
Binary files /dev/null and b/service/Public/Home/Default/Images/home-mini-nav-cart-icon.png differ
diff --git a/service/Public/Home/Default/Images/home-mini-nav-category-icon.png b/service/Public/Home/Default/Images/home-mini-nav-category-icon.png
new file mode 100755
index 000000000..038849145
Binary files /dev/null and b/service/Public/Home/Default/Images/home-mini-nav-category-icon.png differ
diff --git a/service/Public/Home/Default/Images/home-mini-nav-seconds-icon.png b/service/Public/Home/Default/Images/home-mini-nav-seconds-icon.png
new file mode 100755
index 000000000..d6610ad03
Binary files /dev/null and b/service/Public/Home/Default/Images/home-mini-nav-seconds-icon.png differ
diff --git a/service/Public/Home/Default/Images/home-mini-nav-user-icon.png b/service/Public/Home/Default/Images/home-mini-nav-user-icon.png
new file mode 100755
index 000000000..427e89488
Binary files /dev/null and b/service/Public/Home/Default/Images/home-mini-nav-user-icon.png differ
diff --git a/service/Public/Home/Default/Js/Cart.js b/service/Public/Home/Default/Js/Cart.js
index c41bc1661..386cf668f 100755
--- a/service/Public/Home/Default/Js/Cart.js
+++ b/service/Public/Home/Default/Js/Cart.js
@@ -121,10 +121,11 @@ $(function()
     function cart_nav_pop()
     {
         var scroll = $(document).scrollTop();
-        var location = scroll+$(window).height();
+        var location = scroll+$(window).height()-65;
+        var bottom = ($(window).width() < 640) ? '49px' : '0';
         if(location < nav_top)
         {
-            $('.cart-nav').css({"position":"fixed", "bottom":0, "width":$('.cart-content').width()+"px", "z-index":1000});
+            $('.cart-nav').css({"position":"fixed", "bottom":bottom, "width":$('.cart-content').width()+"px", "z-index":1000});
         } else {
             $('.cart-nav').css({"position":"relative", "bottom":0, "z-index":0, "width":"100%"});
         }