// JavaScript to interpolate random images into a page.
var ic = 12;     // Number of alternative images
var a_img = new Array(ic);  // Array to hold filenames
var a_downtext = new Array(ic);  // Array to hold down of image text/link
        
a_img[0] = "http://www.umdnj.edu/opaweb/images/homepage/lab2d.gif";
a_downtext[0] = "";

a_img[1] = "http://www.umdnj.edu/opaweb/images/homepage/lab-hood.jpg";
a_downtext[1] = "";

a_img[2] = "http://www.umdnj.edu/opaweb/images/homepage/meeting-room.jpg";
a_downtext[2] = "";

a_img[3] = "http://www.umdnj.edu/opaweb/images/homepage/neuro.jpg";
a_downtext[3] = "";

a_img[4] = "http://www.umdnj.edu/opaweb/images/homepage/lab-work.jpg";
a_downtext[4] = "";

a_img[5] = "http://www.umdnj.edu/opaweb/images/homepage/lab-gel.jpg";
a_downtext[5] = "";

a_img[6] = "http://www.umdnj.edu/opaweb/images/homepage/lab-micro.gif";
a_downtext[6] = "";

a_img[7] = "http://www.umdnj.edu/opaweb/images/homepage/lab2d.gif";
a_downtext[7] = "";

a_img[8] = "http://www.umdnj.edu/opaweb/images/homepage/em_lab.jpg";
a_downtext[8] = "";


a_img[9] = "http://www.umdnj.edu/opaweb/images/homepage/lab-work2.jpg";
a_downtext[9] = "";

a_img[10] = "http://www.umdnj.edu/opaweb/images/homepage/lab-work3.jpg";
a_downtext[10] = "";

a_img[11] = "http://www.umdnj.edu/opaweb/images/homepage/beltedgalloway.jpg";
a_downtext[11] = "<b><a href='http://www.beltie.org/Mov00001.mpg'>Galloway Cow (Oreo)</b></a><br>just to break up the routine";


function pickRandom(range) {
	if (Math.random)
		return Math.round(Math.random() * (range-1));
	else {
		var now = new Date();
		return (now.getTime() / 1000) % range;
	}
}
// Write out an IMG tag, using a randomly-chosen image name.
var choice = pickRandom(ic);
document.getElementById("td_img").innerHTML = "<img src='"+ a_img[choice] 
+"' width='240' border='0'>";
document.getElementById("td_downtext").innerHTML = a_downtext[choice]

// a_img[9] = "http://www.umdnj.edu/opaweb/images/homepage/chem-lab.jpg";
// a_downtext[9] = "";