js遮罩层

charrys · 发表于 2013-2-7 20:20:07

直接贴代码了！(来自:http://www.ok22.org/art_detail.aspx?id=120)

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>无标题文档</title><script type="text/javascript">function BOX_show(e,a)//显示{ if (document.getElementById(e) == null) { return; } if (!a) { var selects = document.getElementsByTagName('select'); for (i = 0; i < selects.length; i++) { selects.style.visibility = "hidden"; } } BOX_layout(e); window.onresize = function() { BOX_layout(e); } //改变窗体重新调整位置 window.onscroll = function() { BOX_layout(e); } //滚动窗体重新调整位置 document.onkeyup = function(event) { var evt = window.event || event; var code = evt.keyCode ? evt.keyCode : evt.which; //alert(code); if (code == 27) { BOX_remove(e); } }}function BOX_remove(e)//移除{ window.onscroll = null; window.onresize = null; document.getElementById('BOX_overlay').style.display = "none"; document.getElementById(e).style.display = "none"; var selects = document.getElementsByTagName('select'); for (i = 0; i < selects.length; i++) { selects.style.visibility = "visible"; }}function BOX_layout(e)//调整位置{ var a = document.getElementById(e); if (document.getElementById('BOX_overlay') == null)//判断是否新建遮掩层 { var overlay = document.createElement("div"); overlay.setAttribute('id', 'BOX_overlay'); document.body.appendChild(overlay); } document.getElementById('BOX_overlay').ondblclick = function() { BOX_remove(e); }; //取客户端左上坐标，宽，高 var scrollLeft = (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft); var scrollTop = (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop); var clientWidth; if (window.innerWidth) { clientWidth = window.innerWidth; } else { clientWidth = document.documentElement.clientWidth; } var clientHeight; if (window.innerHeight) { clientHeight = window.innerHeight; } else { clientHeight = document.documentElement.clientHeight; } var bo = document.getElementById('BOX_overlay'); bo.style.left = scrollLeft + 'px'; bo.style.top = scrollTop + 'px'; bo.style.width = '100%'; bo.style.height = clientHeight + 'px'; bo.style.display = 'block'; //Popup窗口定位 a.style.display = 'block' a.style.left = scrollLeft + ((clientWidth - a.offsetWidth) / 2) + 'px'; a.style.top = scrollTop + ((clientHeight - a.offsetHeight) / 2) + 'px';}function HiddenButton(e) { e.style.visibility = 'hidden'; e.previousSibling.style.visibility = 'visible'}function UserLogin(e) { BOX_show(e);}</script><style>*{margin:0;padding:0;font-size:12px;font-style:normal;line-height:20px;}html,body{height:100%;overflow:hidden;}/**mask**/#BOX_overlay {background:#000;left:0;filter:alpha(opacity=80);-moz-opacity:0.8; opacity: 0.8;position:absolute;top:0;z-index:100;}/**iframe**/div#layer_box{height:80%;width:80%;padding:30px 10px 10px;position:absolute;display:none;z-index:101;background:#fff url(bgimgconer_files/gradient.png);}</style></head><body><a href="javascript:UserLogin('layer_box');"><img src="brandPIC/BMW.png" />宝马</a><div id="layer_box"><iframe id="alls" name="alls" frameborder="0" scrolling="auto" src="http://www.lempon.com" width="100%" height="100%"></iframe></div></body></html>

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js遮罩层

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