// test for Netscape 3.0 compatibility 
NScompatible = false;
if ( parseInt( navigator.appVersion ) >= 3 ) { 
   NScompatible = true; 
}

// cache hilite version of navigation images
if ( NScompatible ) {
  JUMPABOUTHILITE = new Image;
  JUMPABOUTHILITE.src = "/home/bryan/global/jumpabouthilite.gif";

  JUMPPROJECTSHILITE = new Image;
  JUMPPROJECTSHILITE.src = "/home/bryan/global/jumpprojectshilite.gif";

  JUMPLINKSHILITE = new Image;
  JUMPLINKSHILITE.src = "/home/bryan/global/jumplinkshilite.gif";

  JUMPBLOGHILITE = new Image;
  JUMPBLOGHILITE.src = "/home/bryan/global/jumpbloghilite.gif";

  JUMPABOUT = new Image;
  JUMPABOUT.src = "/home/bryan/global/jumpabout.gif";

  JUMPPROJECTS = new Image;
  JUMPPROJECTS.src = "/home/bryan/global/jumpprojects.gif";

  JUMPLINKS = new Image;
  JUMPLINKS.src = "/home/bryan/global/jumplinks.gif";

  JUMPBLOG = new Image;
  JUMPBLOG.src = "/home/bryan/global/jumpblog.gif";

}

// swap images using the cached images
function showHighlight(imageName, mouseIsOver)
{
   if( NScompatible ) { 
      if (mouseIsOver) {
         document.images[imageName].src=eval(imageName + 'HILITE.src'); 
      }
      else {
         document.images[imageName].src=eval(imageName + '.src'); 
      }
   }
}