//preload rollover images
if (document.images) {
	index_over = new Image(226,38); 
	index_over.src="images/nav_home.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_about_over.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_projects_over.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_grant_over.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_news_over.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_ways_over.jpg";
	index_over = new Image(226,38); 
	index_over.src="images/nav_contact_over.jpg";
	
}