if (document.images) {
	img1on = new Image(); img1on.src = "images/navigation/about_me_over.gif";
	img2on = new Image(); img2on.src = "images/navigation/about_phen_over.gif";
	img3on = new Image(); img3on.src = "images/navigation/news_over.gif";
	img4on = new Image(); img4on.src = "images/navigation/media_over.gif";
	img5on = new Image(); img5on.src = "images/navigation/invest_over.gif";
	img6on = new Image(); img6on.src = "images/navigation/contact_over.gif";
	img7on = new Image(); img7on.src = "images/navigation/invest2_over.gif";
	img10on = new Image(); img10on.src = "images/navigation/home_over.gif";
	img11on = new Image(); img11on.src = "images/navigation/the_tech_over.gif";
	img12on = new Image(); img12on.src = "images/navigation/clinicalTrials_over.gif";

	img21on = new Image(); img21on.src = "images/navigation/open_page_over.gif";

	
	img1off = new Image(); img1off.src = "images/navigation/about_me.gif";
	img2off = new Image(); img2off.src = "images/navigation/about_phen.gif";
	img3off = new Image(); img3off.src = "images/navigation/news.gif";
	img4off = new Image(); img4off.src = "images/navigation/media.gif";
	img5off = new Image(); img5off.src = "images/navigation/invest.gif";
	img6off = new Image(); img6off.src = "images/navigation/contact.gif";
	img7off = new Image(); img7off.src = "images/navigation/invest2.gif";
	img10off = new Image(); img10off.src = "images/navigation/home.gif";
	img11off = new Image(); img11off.src = "images/navigation/the_tech.gif";
	img12off = new Image(); img12off.src = "images/navigation/clinicalTrials.gif";
	img21off = new Image(); img21off.src = "images/navigation/open_page.gif";

}

function imgon(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "on.src");
	}
}

function imgoff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "off.src");	
	}
}