Fix 1: Provide text equivalents for visuals

Important! Provide text since can be rendered visually, as speech, or as braille. Helps almost all groups of users.

Provide short equivalent text with the "alt" attribute:

   <IMG ... alt="Navigation Bar..." >
   <IMG ... alt="Advertising Information" >

   <AREA ... alt="More Articles" >
   <AREA ... alt="Health Topics" >

   <IMG src="yhd.gif" alt="Buy Your Health" >
   <IMG ... alt="Latest News" >

Related checkpoint: 1.1 [Priority 1].