La imagen se expande

HTML

<script type='text/javascript'>//<![CDATA[
/* Expando Image Script 2008 John Davenport Scheueras first seen in http://www.dynamicdrive.com/forums/username: jscheuer1 - This Notice Must Remain for Legal Use*/
if (document.images){(function(){var cos, a = /Apple/.test(navigator.vendor), times = a? 20 : 40, speed = a? 40 : 20;var expConIm = function(im){im = im || window.event;if (!expConIm.r.test (im.className))im = im.target || im.srcElement || null;if (!im || !expConIm.r.test (im.className))return;var e = expConIm,widthHeight = function(dim){return dim[0] * cos + dim[1] + 'px';},resize = function(){cos = (1 - Math.cos((e.ims[i].jump / times) * Math.PI)) / 2;im.style.width = widthHeight (e.ims[i].w);im.style.height = widthHeight (e.ims[i].h);if (e.ims[i].d && times > e.ims[i].jump){++e.ims[i].jump;e.ims[i].timer = setTimeout(resize, speed);} else if (!e.ims[i].d && e.ims[i].jump > 0){--e.ims[i].jump;e.ims[i].timer = setTimeout(resize, speed);}}, d = document.images, i = d.length - 1;for (i; i > -1; --i)if(d[i] == im) break;i = i + im.src;if (!e.ims[i]){im.title = '';e.ims[i] = {im : new Image(), jump : 0};e.ims[i].im.onload = function(){e.ims[i].w = [e.ims[i].im.width - im.width, im.width];e.ims[i].h = [e.ims[i].im.height - im.height, im.height];e (im);};e.ims[i].im.src = im.src;return;}if (e.ims[i].timer) clearTimeout(e.ims[i].timer);e.ims[i].d = !e.ims[i].d;resize ();};
expConIm.ims = {};
expConIm.r = new RegExp('\\bexpando\\b');
if (document.addEventListener){document.addEventListener('mouseover', expConIm, false);document.addEventListener('mouseout', expConIm, false);}else if (document.attachEvent){document.attachEvent('onmouseover', expConIm);document.attachEvent('onmouseout', expConIm);}})();}//]]></script><img border="0" src="http://laplumedelinor.files.wordpress.com/2011/12/coeur-paix-anim2.gif" class="expando" width="80" alt="" />