if(document.images) {
	
	search = new Image;
	search.src = "/images/nav/gn-search.gif";
	
	search_over = new Image;
	search_over.src = "/images/nav/gn-search-over.gif";
	
	sitemap = new Image;
	sitemap.src = "/images/nav/gn-sitemap.gif";
	
	sitemap_over = new Image;
	sitemap_over.src = "/images/nav/gn-sitemap-over.gif";
	
	publications = new Image;
	publications.src = "/images/nav/gn-publications.gif";
	
	publications_over = new Image;
	publications_over.src = "/images/nav/gn-publications-over.gif";
	
	calendar = new Image;
	calendar.src = "/images/nav/gn-calendar.gif";
	
	calendar_over = new Image;
	calendar_over.src = "/images/nav/gn-calendar-over.gif";
	
	about = new Image;
	about.src = "/images/nav/n-about-nsrc.gif";
	
	about_over = new Image;
	about_over.src = "/images/nav/n-about-nsrc-over.gif";		

	base = new Image;
  base.src = "/images/nav/n-base.gif";

	base_over = new Image;
  base_over.src = "/images/nav/n-base-over.gif";
	
	laser = new Image;
  laser.src = "/images/nav/n-laser.gif";

	laser_over = new Image;
  laser_over.src = "/images/nav/n-laser-over.gif";

	school = new Image;
  school.src = "/images/nav/n-laser.gif";

	school_over = new Image;
  school_over.src = "/images/nav/n-laser-over.gif";
	
	professional = new Image;
  professional.src = "/images/nav/n-professional-dev.gif";

	professional_over = new Image;
  professional_over.src = "/images/nav/n-professional-dev-over.gif";
	
	curriculum = new Image;
  curriculum.src = "/images/nav/n-curriculum-res.gif";

	curriculum_over = new Image;
  curriculum_over.src = "/images/nav/n-curriculum-res-over.gif";
	
	student = new Image;
  student.src = "/images/nav/n-student-parent-res.gif";

	student_over = new Image;
  student_over.src = "/images/nav/n-student-parent-res-over.gif";
	
	partnerships = new Image;
  partnerships.src = "/images/nav/n-partnerships-net.gif";

	partnerships_over = new Image;
  partnerships_over.src = "/images/nav/n-partnerships-net-over.gif";	
	
	news = new Image;
  news.src = "/images/nav/n-news.gif";

	news_over = new Image;
  news_over.src = "/images/nav/n-news-over.gif";		

	development = new Image;
  development.src = "/images/nav/n-development.gif";

	development_over = new Image;
  development_over.src = "/images/nav/n-development-over.gif";

}	

// MouseOver Function

function swapOn(imgLocation) {
  	if(document.images) {					//IE and netscape should use for main nav rollovers
    		document.images[imgLocation].src = eval(imgLocation + "_over.src"); 	//IE should use for div rollovers too
  	}
}

// MouseOut Function

function swapOff(imgLocation) {
  	if(document.images) {
    		document.images[imgLocation].src = eval(imgLocation + ".src");
  	}				     
}