adding a symbol to next to a textbox

[surajan]

Can I add a question mark symbol next to my Rule text so that when the user clicks on it, they can see what it means.

			{
				xtype: 'container',
				layout: 'hbox',
				items: [
					{
						xtype: 'text',
						style: 'font-weight:bold;',
						text:'Role',
						padding: '2 6 2 7'
					}
					]
			},
			{
				xtype: 'container',
				layout: 'hbox',
				items: [
				{
					xtype: 'combobox',
					editable:false,
					id:'role_id',
					store: roles_store, 
					triggerAction:'all',
					name: 'role_id',
					valueField: 'role_id',
					displayField:'role_name',
					padding: '2 6 2 7'
				}
				]
			},