function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		vaccine_04_over = newImage("images/vaccine_04-over.jpg");
		vaccine_05_over = newImage("images/vaccine_05-over.jpg");
		vaccine_06_over = newImage("images/vaccine_06-over.jpg");
		vaccine_07_over = newImage("images/vaccine_07-over.jpg");
		vaccine_08_over = newImage("images/vaccine_08-over.jpg");
		vaccine_09_over = newImage("images/vaccine_09-over.jpg");
		vaccine_10_over = newImage("images/vaccine_10-over.jpg");
		preloadFlag = true;
	}
}

var newwindow = '';


function popitup(url) {
if (newwindow.location && !newwindow.closed) {
    newwindow.location.href = "player.html?display=" + url; 
    newwindow.focus(); } 
else { 
	newdisplay = "player.html?display=" + url;
    newwindow=window.open(newdisplay,'vaccine','width=300,height=330,resizable=1,scrollbars=1');
	} 
}