// xAniXY r1, Copyright 2006-2007 Michael Foster (Cross-Browser.com)
// Part of X, a Cross-Browser Javascript Library, Distributed under the terms of the GNU LGPL
function xAniXY(e, x, y, t)
{
if (!(e=xGetElementById(e))) return;
var x0 = xLeft(e), y0 = xTop(e); // start positions
var dx = x - x0, dy = y - y0; // displacements
var fq = 1 / t; // frequency
var t0 = new Date().getTime(); // start time
var tmr = setInterval(
function() {
var xi = x, yi = y;
var et = new Date().getTime() - t0; // elapsed time
if (et < t) {
var f = et * fq; // constant velocity
xi = f * dx + x0; // instantaneous positions
yi = f * dy + y0;
}
else { clearInterval(tmr); }
e.style.left = Math.round(xi) + 'px';
e.style.top = Math.round(yi) + 'px';
}, 10 // timer resolution
);
}