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function preloadImages() {
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		tnav_history_over = newImage("/images/tnav_history-over.gif");
		tnav_promotions_over = newImage("/images/tnav_promotions-over.gif");
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		tnav_for_new_parents_over = newImage("/images/tnav_for_new_parents-over.gif");
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		tnav_for_adults_over = newImage("/images/tnav_for_adults-over.gif");
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		fnp_lnav_as_they_grow_over = newImage("/images/fnp_lnav_as_they_grow-over.gif");
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