function move(id, x, y) {
	var elem = document.getElementById(id);
	elem.style.position = 'absolute';
	elem.style.left = x + 'px';
	elem.style.top = y + 'px';
};
function run(id, px) {
	var i = 0;
	var interval = window.setInterval(function() {
		var t;
		do {
			i++;
			move(id, i, i);
			if (t) window.clearInterval(interval);
		} while(t = ( i == px));
	}, 20);
};
run('imgid', 300);









