if (document.images){
	
		b_home_on			= new Image;
		b_home_off			= new Image;
		b_about_on			= new Image;
		b_about_off			= new Image;
		b_clients_on		= new Image;
		b_clients_off		= new Image;
		b_services_on		= new Image;
		b_services_off		= new Image;
		b_products_on		= new Image;
		b_products_off		= new Image;
		b_approach_on		= new Image;
		b_approach_off		= new Image;
		b_contact_on		= new Image;
		b_contact_off		= new Image;
		b_sitemap_on		= new Image;
		b_sitemap_off		= new Image;
		b_ebooks_on			= new Image;
		b_ebooks_off		= new Image;
		b_appearances_on	= new Image;
		b_appearances_off	= new Image;
		b_newsletter_on		= new Image;
		b_newsletter_off	= new Image;
		b_school_on			= new Image;
		b_school_off		= new Image;
		b_board_on			= new Image;
		b_board_off			= new Image;

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		b_home_off.src		= "/imgs/b_home_off.jpg";
		b_about_on.src		= "/imgs/b_about_on.jpg";
		b_about_off.src		= "/imgs/b_about_off.jpg";
		b_clients_on.src	= "/imgs/b_clients_on.jpg";
		b_clients_off.src	= "/imgs/b_clients_off.jpg";
		b_services_on.src	= "/imgs/b_services_on.jpg";
		b_services_off.src	= "/imgs/b_services_off.jpg";
		b_products_on.src	= "/imgs/b_products_on.jpg";
		b_products_off.src	= "/imgs/b_products_off.jpg";
		b_approach_on.src	= "/imgs/b_approach_on.jpg";
		b_approach_off.src	= "/imgs/b_approach_off.jpg";
		b_contact_on.src	= "/imgs/b_contact_on.jpg";
		b_contact_off.src	= "/imgs/b_contact_off.jpg";
		b_sitemap_on.src	= "/imgs/b_sitemap_on.jpg";
		b_sitemap_off.src	= "/imgs/b_sitemap_off.jpg";
		b_ebooks_on.src		= "/imgs/b_ebooks_on.jpg";
		b_ebooks_off.src	= "/imgs/b_ebooks_off.jpg";
		b_appearances_on.src	= "/imgs/b_appearances_on.jpg";
		b_appearances_off.src	= "/imgs/b_appearances_off.jpg";
		b_newsletter_on.src		= "/imgs/b_newsletter_on.jpg";
		b_newsletter_off.src	= "/imgs/b_newsletter_off.jpg";
		b_school_on.src		= "/imgs/b_school_on.jpg";
		b_school_off.src	= "/imgs/b_school_off.jpg";
		b_board_on.src		= "/imgs/b_board_on.jpg";
		b_board_off.src		= "/imgs/b_board_off.jpg";
	
}

function rollNav(x,y){
	if (document.images){
		document[x].src = eval(y +".src");
	}
}