aok = 0;
	if ( navigator.appName == "Netscape" ) {

		var show1;  // This keeps Netscape 2.0 from barfing
		var show2, show3, show4, show5, show6, show7;

		if ( parseInt( navigator.appVersion ) >= 3 ) { aok = 1; }
	} else if ( navigator.appName.substring( 0, 9 ) == "Microsoft" ) {
		if ( parseInt( navigator.appVersion ) >= 4 ) { aok=1; }
	}

	// function loadImages() {
		if ( aok == 1 ) {
  		     var banner1 = new Image();
      		     banner1.src = "pics/banner1.gif";
  		     var banner_about = new Image();
      		     banner_about.src = "pics/banner_about.gif";
		     var banner_consult = new Image();
      		     banner_consult.src = "pics/banner_consult.gif";
             var banner_articles = new Image();
                 banner_articles.src = "pics/banner_articles.gif";
             var banner_drtom = new Image();
                 banner_drtom.src = "pics/banner_drtom.gif";
             var banner_home = new Image();
                 banner_home.src = "pics/banner_home.gif";
             var banner_prolo = new Image();
                 banner_prolo.src = "pics/banner_prolo.gif";
             var banner_test = new Image();
                 banner_test.src = "pics/banner_test.gif";
             var banner_treat = new Image();
                 banner_treat.src = "pics/banner_treat.gif";
		}
	//	return true;
	//}

	function procOver(imgN) {
	  if ( aok == 1 ) {
             document.images['desc'].src = eval( "banner_" + imgN + ".src" );
 	  }
      return true;
	}

	function procOut(imgN) {
	  if ( aok == 1 ) {
            document['desc'].src = eval( "banner1.src" );

	  }
      return true;
	}