Misc fixes to the code cell and output area.

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

@@ -172,7 +172,7 b' div.output_area {'
 /* This class is for the output subarea inside the output_area and after
    the prompt div. */
 div.output_subarea {
-    padding: 0.4em 6.1em 0.4em 0.4em;
+    padding: 0.4em 0.4em 0.4em 0.4em;
 }
 
 /* The rest of the output_* classes are for special styling of the different

IPython/frontend/html/notebook/static/js/codecell.js

@@ -83,7 +83,7 b' var IPython = (function (IPython) {'
             // browser and keyboard layout !
             // Pressing '(' , request tooltip, don't forget to reappend it
             IPython.tooltip.pending(that);
-        } else if (event.which === key.UPARROW) {
+        } else if (event.which === key.UPARROW && event.type === 'keydown') {
             // If we are not at the top, let CM handle the up arrow and
             // prevent the global keydown handler from handling it.
             if (!that.at_top()) {
@@ -92,7 +92,7 b' var IPython = (function (IPython) {'
             } else {
                 return true; 
             };
-        } else if (event.which === key.DOWNARROW) {
+        } else if (event.which === key.DOWNARROW && event.type === 'keydown') {
             // If we are not at the bottom, let CM handle the down arrow and
             // prevent the global keydown handler from handling it.
             if (!that.at_bottom()) {

IPython/frontend/html/notebook/static/js/outputarea.js

@@ -238,7 +238,7 b' var IPython = (function (IPython) {'
 
 
     OutputArea.prototype.append_html = function (html, element) {
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_html rendered_html");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_html rendered_html");
         toinsert.append(html);
         element.append(toinsert);
     };
@@ -246,8 +246,7 b' var IPython = (function (IPython) {'
 
     OutputArea.prototype.append_javascript = function (js, container) {
         // We just eval the JS code, element appears in the local scope.
-        var element = $("<div/>").addClass("box_flex1 output_subarea");
-        var kernel = this.kernel;
+        var element = $("<div/>").addClass("box-flex1 output_subarea");
         container.append(element);
         // Div for js shouldn't be drawn, as it will add empty height to the area.
         container.hide();
@@ -258,7 +257,7 b' var IPython = (function (IPython) {'
 
 
     OutputArea.prototype.append_text = function (data, element, extra_class) {
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_text");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_text");
         // escape ANSI & HTML specials in plaintext:
         data = utils.fixConsole(data);
         if (extra_class){
@@ -270,21 +269,21 b' var IPython = (function (IPython) {'
 
 
     OutputArea.prototype.append_svg = function (svg, element) {
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_svg");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_svg");
         toinsert.append(svg);
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_png = function (png, element) {
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_png");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_png");
         toinsert.append($("<img/>").attr('src','data:image/png;base64,'+png));
         element.append(toinsert);
     };
 
 
     OutputArea.prototype.append_jpeg = function (jpeg, element) {
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_jpeg");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_jpeg");
         toinsert.append($("<img/>").attr('src','data:image/jpeg;base64,'+jpeg));
         element.append(toinsert);
     };
@@ -293,7 +292,7 b' var IPython = (function (IPython) {'
     OutputArea.prototype.append_latex = function (latex, element) {
         // This method cannot do the typesetting because the latex first has to
         // be on the page.
-        var toinsert = $("<div/>").addClass("box_flex1 output_subarea output_latex");
+        var toinsert = $("<div/>").addClass("box-flex1 output_subarea output_latex");
         toinsert.append(latex);
         element.append(toinsert);
     };

IPython/frontend/html/notebook/static/js/utils.js

@@ -99,6 +99,7 b' IPython.utils = (function (IPython) {'
                 SHIFT    : 16,
                 CTRL     : 17,
                 CONTROL  : 17,
+                ALT      : 18,
                 ESC      : 27,
                 SPACE    : 32,
                 PGUP     : 33,