window.onload= function() {
	MM_preloadImages(
	 'images/sec_home_o.gif',				 
	 'images/sec_about_o.gif',
	 'images/sec_books_o.gif',
	 'images/sec_news_o.gif',
	 'images/sec_lib_o.gif',
	 'images/contact_o.gif'
	);		
}