http://www.xulplanet.com/tutorials/xultu/textimage.html http://www.xulplanet.com/reference/elemref/ref_image.html An element that displays an image, much like the HTML img element. The src attribute can be used to specify the URL of the image. nsIAccessibleProvider nsIDOMXULImageElement This event is sent to an image element when an error occurs loading the image. This event handler will be called on the image element when the image has finished loading. This applies whether the image is applied via the src attribute or the list-style-image style property. If you change the image, the event will fire again when the new image loads. This event will not bubble up the element tree. The URL of the image to appear on the image. If this attribute is left out, no image appears. This attribute indicates whether to load the image from the cache or not. This would be useful if the images are stored remotely or you plan on swapping the image frequently. The following values are accepted, or leave out the attribute entirely for default handling: The image is always checked to see whether it should be reloaded. The image will be loaded from the cache if possible. Class that adds an alert icon. This typically looks like an exclamation mark. This and the other icon classes may be used by image elements or other elements which can have an image. Class that adds a error icon. This will typically be a red X icon. Class that adds a message box icon. Class that adds a question icon, which usually looks like a question mark. Returns the accessibility object for the image.