function displayPhoto() {
	var imageURL  = new Array(5);
	var siteURL   = new Array(5);
	var siteName  = new Array(5);
	var textColor = new Array(5);
	
	imageURL[0]  = "lip.jpg";
	siteURL[0]   = "http://www-lip.ist.osaka-u.ac.jp/";
	siteName[0]  = "Laboratory of Information Photonics";
	textColor[0] = "red";
	
	imageURL[1]  = "002.jpg";
	siteURL[1]   = "http://www-b1.opt.tokushima-u.ac.jp/";
	siteName[1]  = "Tokushima Information Photonics Laboratory";
	textColor[1] = "white";
	
	imageURL[2]  = "oel.jpg";
	siteURL[2]   = "http://picasso.elec.eng.osaka-cu.ac.jp/";
	siteName[2]  = "Opt Electronics Lab.";
	textColor[2] = "blue";
	
	imageURL[3]  = "003.jpg";
	siteURL[3]   = "http://www.i-photonics.jp/";
	siteName[3]  = "Group of Information Photonics";
	textColor[3] = "gray";
	
	imageURL[4]  = "004.jpg";
	siteURL[4]   = "http://www.i-photonics.jp/";
	siteName[4]  = "Group of Information Photonics";
	textColor[4] = "red";
	
	var n = Math.floor(Math.random() * imageURL.length);
	document.write("<p id='logo'><img src='http://www.i-photonics.jp/images/logo/" + imageURL[n] + "' width='800'></p>");
	document.write("<p id='link' style='color:" + textColor[n] + "'>");
	document.write("<a href='" + siteURL[n] + "' style='color:" + textColor[n] + "'>" + siteName[n] + "</a>&nbsp;&gt;&nbsp;</p>");
}