msSiteModeAddButtonStyle method

Defines an alternate icon image and tooltip for the specified button.

This method is only supported in Internet Explorer 11 on Windows 10.

This method is not supported for Windows Store apps using JavaScript.

Internet Explorer 9



object.msSiteModeAddButtonStyle(buttonID, iconUrl, tooltip)


buttonID [in]

Type: number

The ID of a button that is previously installed with msSiteModeAddThumbBarButton.

iconUrl [in]

Type: String

An absolute or relative URI of an icon resource.

tooltip [in, optional]

Type: String

A description of the button.

Return value

Type: Integer

Returns the ID of the new button style.

Standards information

There are no standards that apply here.


A button style consists of an additional icon and tooltip for a button position. The msSiteModeAddButtonStyle method only creates button styles; to apply them, call msSiteModeShowButtonStyle. The original icon and tooltip are automatically saved as Style 0 and do not need to be added again.

The button returns the same button ID no matter which button style is displayed. To perform the correct action, your application will need to retain the button state internally.

The icon is downloaded asynchronously. If the download fails, a blank button is used instead.


The following script adds two button styles to btnPlayPause, which was created by a prior call to the msSiteModeAddThumbBarButton method.

function addButtonStyles()
    stylePlay = window.external.msSiteModeAddButtonStyle(btnPlayPause,
                '', 'Play');
    stylePause = window.external.msSiteModeAddButtonStyle(btnPlayPause,
                '', 'Pause');

See also




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