var imgs = new Array();
var descrs = new Array();
var p = 0;
function add_img(id, url, descr) {
	imgs[id] = url;
	descrs[id] = descr;
}

function show_img(id) {
	document.getElementById('img1').src = imgs[id];
	document.getElementById('img_descr').innerHTML = descrs[id];
}