slide with no lazyload of first img & return top z-index

@@ -4,7 +4,11 @@
             {{# list}}
             <li style="{{#if bgColor}}background:{{bgColor}}{{/if}}">
                 <a href="{{href}}" target= "_blank">
+                    {{#if @first}}
+                    <img src="{{img}}">
+                    {{^}}
                     <img class="lazy" data-original="{{img}}" alt="">
+                    {{/if}}
                 </a>
                 {{# tips}}
                 <div class="slide-tips">

@@ -344,6 +344,8 @@
         filter: alpha(opacity=50);
         bottom: 20px;
         cursor: pointer;
+        z-index: 4;
+
         &:hover {
             opacity: 0.9;
             filter: alpha(opacity=90);