document.write('<img id=world src=http://queville.com/WORLDMAP1.gif>');

document.write('<p align=center><font size=+1><b> &nbsp; ');
document.write('<a href=javascript:Map(\"1\");>World Map</a> &nbsp; ');
document.write('<a href=javascript:Map(\"2\");>With Grid</a> &nbsp; ');
document.write('<a href=javascript:Map(\"3\");>Overlays</a>');



function Map(a) {

  map="WORLDMAP1.gif";
  if (a==2) { map="WORLDMAP2.gif"; }
  if (a==3) { map="WORLDMAP3.gif"; }

  document.getElementById('world').src="http://queville.com/"+map;


}