var aryImages = new Array(41);

aryImages[0] = "/images/m_home_on.gif";
aryImages[1] = "/images/m_home_off.gif";
aryImages[2] = "/images/i_evms_on.gif";
aryImages[3] = "/images/i_evms_off.gif";
aryImages[4] = "/images/i_research_on.gif";
aryImages[5] = "/images/i_research_off.gif";
aryImages[6] = "/images/i_patient_on.gif";
aryImages[7] = "/images/i_patient_off.gif";
aryImages[8] = "/images/i_education_on.gif";
aryImages[9] = "/images/i_education_off.gif";
aryImages[10] = "/images/m_dif_on.gif";
aryImages[11] = "/images/m_dif_off.gif";
aryImages[12] = "/images/m_donate_on.gif";
aryImages[13] = "/images/m_donate_off.gif";
aryImages[14] = "/images/m_news_on.gif";
aryImages[15] = "/images/m_news_off.gif";
aryImages[16] = "/images/m_topics_on.gif";
aryImages[17] = "/images/m_topics_off.gif";
aryImages[18] = "/images/m_stories_on.gif";
aryImages[19] = "/images/m_stories_off.gif";
aryImages[20] = "/images/m_links_on.gif";
aryImages[21] = "/images/m_links_off.gif";
aryImages[22] = "/images/m_contact_on.gif";
aryImages[23] = "/images/m_contact_off.gif";
aryImages[24] = "/images/m_newsletter_on.gif";
aryImages[25] = "/images/m_newsletter_off.gif";

aryImages[26] = "/images/h_contact_on.gif";
aryImages[27] = "/images/h_contact_off.gif";
aryImages[28] = "/images/h_dif_on.gif";
aryImages[29] = "/images/h_dif_off.gif";
aryImages[30] = "/images/h_donate_on.gif";
aryImages[31] = "/images/h_donate_off.gif";
aryImages[32] = "/images/h_links_on.gif";
aryImages[33] = "/images/h_links_off.gif";
aryImages[34] = "/images/h_news_on.gif";
aryImages[35] = "/images/h_news_off.gif";
aryImages[36] = "/images/h_newsletter_on.gif";
aryImages[37] = "/images/h_newsletter_off.gif";
aryImages[38] = "/images/h_stories_on.gif";
aryImages[39] = "/images/h_stories_off.gif";
aryImages[40] = "/images/h_topics_on.gif";
aryImages[41] = "/images/h_topics_off.gif";


function doOnce() {
	for (i=0; i < aryImages.length; i++) {
		var preload = new Image();
		preload.src = aryImages[i];
	}
	if (thisPage > 0) {
		aryImages[thisPage+1] = aryImages[thisPage];
		document.getElementById(thisPage).src= aryImages[thisPage];
	}
}
function swap(imgObj, imgIndex) {
	imgObj.src = aryImages[imgIndex];
}