If you see a red X, a blank image, or no image at all where your graphics should be, check the following:
You might have the wrong browser settings Although all browsers support the same language (HTML), there are some differences among browsers. Some support different versions of HTML and different HTML extensions. Custom options can be set in browsers, such as the default text and background colors, and whether or not graphics are displayed. Consider testing your data access page in different browsers — some of which are available for downloading on the Web — and with different monitor settings, to see if all of your page elements appear.
You might have used the wrong picture format If you link a graphic to a data access page, and the graphic format isn't supported by your browser, your graphics won't be visible. Make sure that the linked picture is in a graphic format that is compatible with your browser. The JPG and GIF graphic formats are compatible with most browsers.