World Wide Web expansion is evolving at a mind-boggling pace, as is the technology used in Web page design. This has long been of considerable concern to Web page developers, and continues to be so. With such a diverse assortment of Web browsers in use, it is virtually impossible to design pages that look, and work the same in all of them.
      Of particular concern are the older, so-called "legacy" browsers. New technologies employing such tools as Dynamic Hypertext Markup Language (DHTML), which itself uses scripting languages such as JavaScript, and Cascading Style Sheets (CSS) [also known as Layers, depending on the browser to which you refer], have become quite commonplace in modern Web page design and, in fact are employed here on the Preventive Health Today site.
      These pages have been optimized for Internet Explorer 4.x and later, and Netscape 6, and work tolerably well with Netscape 4.x, though the latter will occasionally exhibit unpredictable behavior, including the display of stray characters here and there. The pages are designed to fit a screen using a monitor resolution of 800x600, but will look considerably better with the monitor resolution set at 1024x768 or higher. If you are having difficulty viewing these pages, or are finding some of the material somewhat scrambled or peculiar looking, it is most likely due to the use of a legacy browser. If you find yourself in this situation, now is as good a time as any to put that old software out to pasture and download a current version.
      Those of us at Preventive Health Today do not advocate or recommend the use of any particular Web browser, but feel that each user should make that choice based on their individual Web surfing requirements and experience. As a courtesy to all visitors, we have provided links to the manufacturer's sites for the two major browsers in common use on the Internet today.
      We invite all to upgrade to the current version of the browser of their choice, to better view our pages, as well as all others on the Web.
      Additionally, many of the links we have provided point to sites that format their pages in Adobe's Portable Document Format (PDF), especially U.S. Government sites, though not exclusively so. The PDF format requires Acrobat Reader, the link for which has also been provided.
      Enjoyable surfing to all!