var preloadFlag = false;
		function preloadImages() {
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				pre_hmpg_nav_contact_on = newImage('images/hmpg_nav_contact_on.jpg');
				pre_hmpg_nav_store_on = newImage('images/hmpg_nav_store_on.jpg');
				pre_hmpg_nav_podcasts_on = newImage('images/hmpg_nav_podcasts_on.jpg');
				pre_hmpg_nav_articles_on = newImage('images/hmpg_nav_articles_on.jpg');
				pre_hmpg_nav_download_on = newImage('images/hmpg_nav_download_on.jpg');
				pre_hmpg_nav_methodology_on = newImage('images/hmpg_nav_methodology_on.jpg');
				pre_hmpg_nav_about_on = newImage('images/hmpg_nav_about_on.jpg');
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