oToolbarButton

Required. JavaScript object that helps create a toolbar button. This object comprises the following properties:

• id: Refers to the unique ID of the toolbar button.
  
• caption: Refers to the string that is to be displayed as text of the toolbar button.
  
• imageURL: Refers to the URL of the image to be used as the button's image.
  
• onclick: Refers to the function pointer used as the onclick handler.
  
• title: Refers to the string that is used as tooltip.
  
• buttonType: Refers to the type of button.
  
• dropdownClick: Refers to the function pointer that is used as the onclick handler for a dropdown button.
  
• accessKey: Refers to the character that denotes the accessKey for the toolbar item. (This is a standard HTML property).