gistfile1.js

        this.tbar = new Ext.Toolbar({
        	//height:70,
        	boxMinHeight:100,
           items:[
               {text:'Functional View'}
               ,'->'
               ,{
					xtype:'superboxselect',
					width:275,
					displayField:'description',
					valueField: 'description',
					emptyText: 'All studies',
					mode:'local',
			    	store:'studyStore'
			    },{
					xtype:'superboxselect',
					width:275,
					displayField:'description',
					valueField: 'description',
					emptyText: 'All countries',
					mode:'local',
			    	store:'countryStore'
			    },{
					xtype:'superboxselect',
					width:275,
					displayField:'description',
					valueField: 'description',
					emptyText: 'All sites',
					mode:'local',
			    	store:'siteStore'
			    }
           ]
       });