function pop_window(url, w, h) {
	myfocus = window.open(url, 'mywindow', 'status=0,toolbar=0,menubar=0,scrollbars=1,width='+w+',height='+h); 
	setTimeout('myfocus.focus()',500);
}
function swap_image(name, url) {
	document.images[name].src = url;
}