diff --git a/IPython/html/static/notebook/js/cell.js b/IPython/html/static/notebook/js/cell.js
index ffe72cc..67f4eb4 100644
--- a/IPython/html/static/notebook/js/cell.js
+++ b/IPython/html/static/notebook/js/cell.js
@@ -230,6 +230,34 @@ var IPython = (function (IPython) {
     };
 
     /**
+     * @method at_top
+     * @return {Boolean}
+     */
+    Cell.prototype.at_top = function () {
+        var cm = this.code_mirror
+        var cursor = cm.getCursor();
+        if (cursor.line === 0 && cm.findPosV(cursor, -1, 'line').hitSide) {
+            console.log('at top');
+            return true;
+        } else {
+            return false;
+        }
+    };
+
+    /**
+     * @method at_bottom
+     * @return {Boolean}
+     * */
+    Cell.prototype.at_bottom = function () {
+        var cm = this.code_mirror
+        var cursor = cm.getCursor();
+        if (cursor.line === (cm.lineCount()-1) && cm.findPosV(cursor, 1, 'line').hitSide) {
+            return true;
+        } else {
+            return false;
+        }
+    };
+    /**
      * enter the command mode for the cell
      * @method command_mode
      * @return is the action being taken
diff --git a/IPython/html/static/notebook/js/codecell.js b/IPython/html/static/notebook/js/codecell.js
index 3ef98ff..44541ec 100644
--- a/IPython/html/static/notebook/js/codecell.js
+++ b/IPython/html/static/notebook/js/codecell.js
@@ -501,26 +501,6 @@ var IPython = (function (IPython) {
     };
 
 
-    CodeCell.prototype.at_top = function () {
-        var cursor = this.code_mirror.getCursor();
-        if (cursor.line === 0 && cursor.ch === 0) {
-            return true;
-        } else {
-            return false;
-        }
-    };
-
-
-    CodeCell.prototype.at_bottom = function () {
-        var cursor = this.code_mirror.getCursor();
-        if (cursor.line === (this.code_mirror.lineCount()-1) && cursor.ch === this.code_mirror.getLine(cursor.line).length) {
-            return true;
-        } else {
-            return false;
-        }
-    };
-
-
     CodeCell.prototype.clear_output = function (wait) {
         this.output_area.clear_output(wait);
         this.set_input_prompt();
diff --git a/IPython/html/static/notebook/js/textcell.js b/IPython/html/static/notebook/js/textcell.js
index 038dee4..db69d2d 100644
--- a/IPython/html/static/notebook/js/textcell.js
+++ b/IPython/html/static/notebook/js/textcell.js
@@ -242,40 +242,6 @@ var IPython = (function (IPython) {
         this.element.find('div.text_cell_render').html(text);
     };
 
-    /**
-     * @method at_top
-     * @return {Boolean}
-     */
-    TextCell.prototype.at_top = function () {
-        if (this.rendered) {
-            return true;
-        } else {
-            var cursor = this.code_mirror.getCursor();
-            if (cursor.line === 0 && cm.findPosV(cm.getCursor(), -1, 'line',  cm.charCoords(cm.getCursor(),'div').left).hitSide) {
-                console.log('at top');
-                return true;
-            } else {
-                return false;
-            }
-        }
-    };
-
-    /**
-     * @method at_bottom
-     * @return {Boolean}
-     * */
-    TextCell.prototype.at_bottom = function () {
-        if (this.rendered) {
-            return true;
-        } else {
-            var cursor = this.code_mirror.getCursor();
-            if (cursor.line === (this.code_mirror.lineCount()-1) && cursor.ch === this.code_mirror.getLine(cursor.line).length) {
-                return true;
-            } else {
-                return false;
-            }
-        }
-    };
 
     /**
      * Create Text cell from JSON