Finally got the tables to scroll independently and fill the remaining page height. Still working on Item's alias list controls, and getting key events associated with tables and lists.

public/admin/js/EditableSelect.js

@@ -93,8 +93,17 @@
 				case 9:  //Tab
 					_this.select(_this.$list.find('li.selected'));
 				case 27:  //Esc
-					_this.hide();
-					break;
+					if(_this.$input.hasClass('open')) {
+						_this.hide();
+						//Try to stop any default behavior from occurring.
+						if(event.stopPropagation) event.stopPropagation();
+						else event.cancelBubble = true;  //IE 6-8
+						event.preventDefault();
+						return false;
+					}
+					else {
+						return true;
+					}
 				default:
 					_this.filter();
 					_this.highlight(0);