写了一个简单好用的弹出层插件

废话不多说，直接上代码：

一、CSS

.overlayBackground {
    top: 0%;
    left: 0%;
    width: 100%;
    height: 100%;
    display: none;
    position: absolute;
    background-color: #555555;
    z-index: 1001;
    -moz-opacity: 0.7;
    opacity: .70;
    filter: alpha(opacity=70);
}
.contentDivDialog {
    display: none;
    position: absolute;
    top: 10%;
    left: 10%;
    border: 16px solid lightblue;
    background-color: white;
    z-index: 1002;
    overflow: auto;
}

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