lessonplansAssignmentsGrid = function(day, motherStore){

   var colSelect = new Ext.grid.CheckboxSelectionModel({});
   
    var columns = [
      colSelect,
   /*   {header: '<center><div style="width:16px;height:16px;" class="info_gray" /></center>', width: 38, sortable: true, dataIndex: 'assignmenttype'},  */
      {header: 'Assignment', id: 'assignment', sortable: true, dataIndex: 'assignment'}
    ];
      
   lessonplansAssignmentsGrid.superclass.constructor.call(this, {
      tbar:[{
         xtype: 'splitbutton',
         iconCls: 'add', 
         text: 'Add Assignment', 
         id: day+'LP_add',
         tooltip: 'Add an assignment',
         disabled: true,
         listeners: { 
            click: function(b) { // create Assignment
               var grid = Ext.getCmp(day+'LP_grid');
            
               if (grid.store.getCount() >= 2) {
                  Ext.Msg.alert('Status', 'There can only be 2 assignments setup for a given day.');
                  return false;
               }

			   jsLoader.load('teacher_tools/'+modulizerPath+'/lessonplans_manage_assignment_popup.js');
			   jsLoader.loadedCall(
					function() {
					   lessonplansManageAssignmentPopup.showWithArgs(true, grid);
					}
				);
            }
         },
         menu:[{
            text:'No homework', 
            iconCls:'prohibited',
            listeners: {
               click: function(b) { // no homework
               
               plandate = Ext.getCmp(day+'LP').plandate.format('m/d/Y');
                  Ext.getCmp(day+'LP_grid').store.loadData(new Array(new Array('No homework',plandate,plandate)), true);
               }
            }
        },{
            iconCls: 'pencil', 
            text: 'Edit assignment',
            id: day+'LP_mng',
            listeners: { 
               click: function(b) { // manage Assignment
                     var grid = Ext.getCmp(day+'LP_grid');
                     var records = grid.selModel.selections.items;
                     if (records.length != 1) {
                        Ext.Msg.alert('Status', 'Please select one assignment to make changes to.');
                        return false;
                     }
			   jsLoader.load('teacher_tools/'+modulizerPath+'/lessonplans_manage_assignment_popup.js');
			   jsLoader.loadedCall(
					function() {
					   lessonplansManageAssignmentPopup.showWithArgs(false, Ext.getCmp(day+'LP_grid'), (Ext.isArray(records)? records[0].id : records.id));
					}
				);                     
               }
            }
         },{
            text:'Delete assignment(s)', 
            iconCls:'delete',
            listeners: {
               click: function(b) { // delete assignment
                  var grid = Ext.getCmp(day+'LP_grid');
                  var records = grid.selModel.selections.items;
                  if (!records.length) {
                     Ext.Msg.alert('Status', 'Please select an assignment to delete.');
                     return false;
                  }
                  Ext.Msg.show({ 
                     title:'Delete Assignment(s)', 
                     msg: 'Are you sure you want to delete the selected assignments for '+day+'?', 
                     buttons: Ext.Msg.YESNO, 
                     icon: Ext.MessageBox.WARNING,
                     fn: function(btn) {
                        if (btn == 'yes') {
                           var grid = Ext.getCmp(day+'LP_grid');
                           grid.store.remove(grid.selModel.getSelections());
                        }
                     }
                  });
               }
            }
         },{
            iconCls: 'magnifier', 
            text: 'View due assignments',
            listeners: { 
               click: function(b) { // view a list of Assignments due today
                  var dateOffset = daysofweek.indexOf(day);
                  var date = Ext.getCmp('lessonplan_weekof').getValue();
                  date = date.add(Date.DAY, dateOffset);
				   jsLoader.load('teacher_tools/'+modulizerPath+'/lessonplans_dueassignments.js');
				   jsLoader.loadedCall(
						function(){
							lpViewAssignmentsDue.showWithArgs(date);
						}
				   );
               }
            }
         }]
      }],
      store: assignmentStore.createChildStore('plandate'),
      id: day+'LP_grid',
      day: day, 
      sm: colSelect,
      columns: columns,
      border: false,
      autoHeight: true,
      autoScroll: true,
      autoExpandColumn: 'assignment',
      listeners: {
         rowdblclick: function(grid, rowIndex, e) {
            Ext.getCmp(day+'LP_mng').fireEvent('click');
         }
      }
   });
}

Ext.extend(lessonplansAssignmentsGrid, Ext.grid.GridPanel);