Make the main notebook div auto scroll.

IPython/frontend/html/notebook/static/css/notebook.css

@@ -83,7 +83,6 b' span#ipython_notebook h1 {'
     margin: 10px;
 }
 
-
 div#toolbar {
     width: 100%;
     height: auto;
@@ -93,14 +92,10 b' div#toolbar {'
     padding: 5px;
 }
 
-
-/*#main_toolbar button {
-    font-size: 0.9em;
-}*/
-
 div.notebook {
     width: 790px;
-    height: 100%;
+    height: 650px;  /*We might have to detect window height for this*/
+    overflow: auto;
     margin-left: auto;
     margin-right: auto;
     padding-top: 5px;
@@ -116,7 +111,6 b' div.cell {'
     display: table;
 }
 
-
 div.code_cell {
     background-color: white;
 }
@@ -142,7 +136,6 b' div.input_prompt {'
     color: blue;
 }
 
-
 textarea.input_area {
     text-align: left;
     font-family: Menlo, "Courier New", Courier, mono;
@@ -159,7 +152,6 b' textarea.input_area {'
     resize: none;
 }
 
-
 div.output {
     display: table-row;
     padding: 0px;