A para-site is a Web site that frames other Web sites or pages within its own site. For example, a Web site whose purpose was simply to act as a starting place for all sites about gardening-related home pages might have a framed site with a menu in the left frame. You would select a specific gardening Web site by clicking on the menu and that site would then appear in the right frame. This controversial practice has both proponents and detractors. For Web users who just want to survey all possible gardening site offerings fairly quickly, the para-site approach may be appreciated. The owner of the para-site may get more page views because users leave the site less frequently. On the other hand, it can be argued that the sites that are framed by the para-site are being "republished" within someone else's "publication." Furthermore, the framed sites are designed for full screen viewing, not for framing within a smaller space by someone else. If the framed site is itself framed (for example, as whatis.com is!), the result may be not only less than pleasing to the eye but confusing to the user.
This code ensures that the home page is always placed at the beginning of the window into which it is loaded.