if (document.images) {
	var img = new Array();
	//enter images into the array
	
	img[0] = 'images/nav_about_0.jpg';
	img[1] = 'images/nav_about_1.jpg';
	img[2] = 'images/nav_services_0.jpg';
	img[3] = 'images/nav_services_1.jpg';
	img[4] = 'images/nav_research_0.jpg';
	img[5] = 'images/nav_research_1.jpg';
	img[6] = 'images/nav_recovery_0.jpg';
	img[7] = 'images/nav_recovery_1.jpg';
	img[8] = 'images/nav_locations_0.jpg';
	img[9] = 'images/nav_locations_1.jpg';
	img[10] = 'images/nav_clients_0.jpg';
	img[11] = 'images/nav_clients_1.jpg';
	img[12] = 'images/nav_news_0.jpg';
	img[13] = 'images/nav_news_1.jpg';
	img[14] = 'images/nav_appointment_0.jpg';
	img[15] = 'images/nav_appointment_1.jpg';
	img[16] = '';
	img[17] = '';
	img[18] = '';
	img[19] = '';
	img[20] = 'images/nav_home_0.gif';
	img[21] = 'images/nav_home_1.gif';
	img[22] = 'images/nav_contact_0.gif';
	img[23] = 'images/nav_contact_1.gif';
	img[24] = 'images/nav_physicians_0.gif';
	img[25] = 'images/nav_physicians_1.gif';
	img[26] = 'images/nav_sitemap_0.gif';
	img[27] = 'images/nav_sitemap_1.gif';
	
	
	var im = new Array();
	
	for (var i = 0; i < img.length; i++) {
		im[i] = new Image();
		im[i].src = img[i];	
	}
}

function toggleImg(imageName, num) {
	if (document.images) {
		document.images[imageName].src = im[num].src;
	}
}

function resolution() {
		document.write("<input name='screenresolution' type='hidden' value='" + screen.width + "x" + screen.height + "' />");
}
	
function salesat() {
		document.write("<a href='mailto:info@reavyrehab.com' class='headernav'>Contact us by email</a>");
}