The links will be to the same area of a different image, perhaps from a different year, created using a different processing technique, or from a different kind of data gathering technique. There also may be links available that lead to further zoom-ins of an area of the image. Many companies offer these for sale on the web. Also, some novelty shops carry inexpensive 3-D glasses. The font being displayed by the browser is important to readability.
Browsers allow the user to set the desired display font in the preferences menu.
Avoid decorative fonts, small font sizes, or delicate fonts that have very narrow lines. Netscape Navigator and MSIE are both free and available for download on the web. If you are using computer in the workplace, you may want to check with your computer administration personnel for information about upgrading your Web browsing software.