update for the calculation of layer position

@@ -18,6 +18,46 @@ var $search = $searchBox.children('input[type="text"]'),
         $cancelSearch = $box.children('.no-search'),
         $searchIcon = $searchBox.children('.search-icon');
 
+var updateLayerPosition = (function() {
+    var init = false,
+        windowViewHeight = 0;
+
+
+    return function() {
+        var winHeight = window.innerHeight,
+            bodyHeight = $doc.height(),
+            scrollTopPosition = $win.scrollTop(),
+            layerContentHeight = $appFloatLayer.height(),
+            layerPaddingTop = parseInt($appFloatLayer.css('padding-top')),
+            layerPaddingBottom = parseInt($appFloatLayer.css('padding-bottom')),
+            layerHeight = layerContentHeight + layerPaddingTop + layerPaddingBottom,
+            newPosition;
+
+        if (init) {
+
+            //keyboard is shown
+            if (windowViewHeight - winHeight > 200) {
+                newPosition = bodyHeight - winHeight - scrollTopPosition - layerHeight;
+            } else {
+                newPosition = bodyHeight - winHeight - scrollTopPosition;
+            }
+
+            if (scrollTopPosition + winHeight === bodyHeight) {
+                newPosition = 0;
+            }
+        } else {
+            windowViewHeight = winHeight;
+            newPosition = bodyHeight - winHeight - scrollTopPosition + layerHeight;
+            init = true;
+        }
+
+        $appFloatLayer.css({
+            position: 'relative',
+            bottom: newPosition + 'px'
+        });
+    };
+})();
+
 require('../common');
 
 $search.on('focus', function() {
@@ -68,56 +108,11 @@ $channelLink.on('touchstart', function() {
         borderColor: '#fff'
     });
 });
-var updateLayerPosition = (function() {
-   var init = false;
-   var windowViewHeight = 0;
-   return function() {
-     var winHeight = window.innerHeight;
-     var bodyHeight = $doc.height();
-     var scrollTopPosition = $win.scrollTop();
-     var layerHeight = $appFloatLayer.height();
-     var layerPaddingTop = parseInt($appFloatLayer.css('padding-top'));
-     var layerPaddingBottom = parseInt($appFloatLayer.css('padding-bottom'));
-     var newPosition;
-
-     if(init){
-       if (windowViewHeight - winHeight > 200){//keyboard is shown
-          newPosition = bodyHeight - winHeight - scrollTopPosition - (layerHeight + layerPaddingTop + layerPaddingBottom);
-       } else {
-          newPosition = bodyHeight - winHeight -scrollTopPosition;
-       }
 
-       if (scrollTopPosition + winHeight === bodyHeight) {
-         console.log('got end');
-         newPosition = 0;
-       }
-     }else{
-       windowViewHeight = winHeight;
-       newPosition = bodyHeight - winHeight - scrollTopPosition + layerHeight + layerPaddingTop + layerPaddingBottom;
-       init = true;
-     }
-     $appFloatLayer.css({
-       'position': 'relative',
-       'bottom': newPosition + 'px'
-     });
-   };
-})();
 
 $win.scroll(function() {
-
     updateLayerPosition();
-  //clearTimeout($.data(this, 'scrollTimer'));
-  //$.data(this, 'scrollTimer', setTimeout(function() {
-  //    updateLayerPosition();
-  //}, 2));
 });
 
-//$search.focusin(function() {
-//  $body.css('overflow','hidden');
-//});
-//
-//$search.focusout(function() {
-//  $body.css('overflow','auto');
-//});
 
 $doc.on('ready', updateLayerPosition);