[原]层应用边框样式

<style type="text/css">
    div
    {
        width:300px;
        height:200px;
        background-color:Green;
        margin-bottom:10px;
        }
    .cls
    {
        border:1px solid red;
        }
    </style>
    <script type="text/javascript">
        window.onload = function () {
            var inputs = document.getElementsByTagName('div');
            for (var i = 0; i < inputs.length; i++) {
                inputs[i].onmouseover = function () {
                    for (var j = 0; j < inputs.length; j++) {
                        inputs[j].className = '';
                    };
                    this.className = 'cls';
                };
            };
        };
    </script>
<div></div>
    <div></div>
    <div></div>
    <div></div>

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