JS相册图片抖动放大展示效果的示例代码

var xm;
var ym;
 
/* ==== onmousemove event ==== */
document.Onmousemove= function(e){
	if(window.event) e=window.event;
	xm = (e.x || e.clientX);
	ym = (e.y || e.clientY);
}
 
/* ==== window resize ==== */
function resize() {
	if(diapo)diapo.resize();
}
Onresize= resize;
 
/* ==== opacity ==== */
setOpacity = function(o, alpha){
	if(o.filters)o.filters.alpha.opacity = alpha * 100; else o.style.opacity = alpha;
}
 
 
 
/* ===== encapsulate script ==== */
diapo = {
	O : [],
	DC : 0,
	img : 0,
	txt : 0,
	N : 0,
	xm : 0,
	ym : 0,
	nx : 0,
	ny : 0,
	nw : 0,
	nh : 0,
	rs : 0,
	rsB : 0,
	zo : 0,
	tx_pos : 0,
	tx_var : 0,
	tx_target : 0,
 
	/// script parameters 
	attraction : 2,
	acceleration : .9,
	dampening : .1,
	zoomOver : 2,
	zoomClick : 6,
	transparency : .8,
	font_size: 18,
	//
 
	/* ==== diapo resize ==== */
	resize : function(){
		with(this){
			nx = DC.offsetLeft;
			ny = DC.offsetTop;
			nw = DC.offsetWidth;
			nh = DC.offsetHeight;
			txt.style.fOntSize= Math.round(nh / font_size) + "px";
			if(Math.abs(rs-rsB)<100) for(var i=0; i