这是简单的Javascript解决方案。
演示
HTML
<body>
<img alt="" src="http://www.gettyicons.com/free-icons/136/stars/png/256/star_gold_256.png" id="imgClickAndChange" onclick="myfunction(this)" />
</body>
脚本
var altImg = "http://ww1.prweb.com/prfiles/2011/10/12/8875514/star_white.jpg";
var tmpImg = null;
function changeImg(thisImg) {
tmpImg = thisImg.src;
thisImg.src = altImg;
altImg = tmpImg;
}
function myfunction(ele) {
var pop=new myPop();
pop.popOut(ele);
}
function myPop() {
this.square = null;
this.overdiv = null;
this.popOut = function(ele) {
tmpImg = ele.src;
//filter:alpha(opacity=25);-moz-opacity:.25;opacity:.25;
this.overdiv = document.createElement("div");
this.overdiv.className = "overdiv";
this.square = document.createElement("div");
this.square.className = "square";
this.square.Code = this;
var msg = document.createElement("div");
msg.className = "msg";
msg.innerHTML = '<img alt="" src="'+altImg+'" id="imgClickAndChange" />';
altImg = tmpImg;
this.square.appendChild(msg);
var closebtn = document.createElement("button");
closebtn.onclick = function() {
this.parentNode.Code.popIn();
}
closebtn.innerHTML = "Close";
this.square.appendChild(closebtn);
document.body.appendChild(this.overdiv);
document.body.appendChild(this.square);
}
this.popIn = function() {
if (this.square != null) {
document.body.removeChild(this.square);
this.square = null;
}
if (this.overdiv != null) {
document.body.removeChild(this.overdiv);
this.overdiv = null;
}
}
}
CSS
div.overdiv { filter: alpha(opacity=75);
-moz-opacity: .75;
opacity: .75;
background-color: #c0c0c0;
position: absolute;
top: 0px;
left: 0px;
width: 100%; height: 100%; }
div.square { position: absolute;
top: 200px;
left: 200px;
background-color: Menu;
border: #f9f9f9;
height: 200px;
width: 300px; }
div.square div.msg { color: #3e6bc2;
font-size: 15px;
padding: 15px; }