网(LieHuo.Net)教程 本教程描述的是一个Javascript遮罩层和窗口，其实JQuery也有很多这样的插件，觉得这个也不错，所以分享出来！直接看代码：
<!DOCTYPE html PUBLIC "-W3CDTD XHTML 1.0 TransitionalEN" "http:www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>一个Javascript遮罩层和窗口效果 - 网（LIEHUO.NET）</title><script type="text/javascript"> function sAlert(str){ var msgw,msgh,bordercolor; msgw=500;//Width msgh=265;//Height titleheight=25 //title Height; bordercolor="#336699";//boder color titlecolor="#99CCFF";//title color var sWidth,sHeight; sWidth=document.body.offsetWidth; sHeight=screen.height; var bgObj=document.createElement("div"); bgObj.setAttribute('id','bgDiv'); bgObj.style.position="absolute"; bgObj.style.top="0"; bgObj.style.background="#777"; bgObj.style.filter="progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75"; bgObj.style.opacity="0.6"; bgObj.style.left="0"; bgObj.style.width=sWidth + "px"; bgObj.style.height=sHeight + "px"; bgObj.style.zIndex = "10000"; document.body.appendChild(bgObj); var msgObj=document.createElement("div") msgObj.setAttribute("id","msgDiv"); msgObj.setAttribute("align","center"); msgObj.style.background="white"; msgObj.style.border="1px solid " + bordercolor; msgObj.style.position = "absolute"; msgObj.style.left = "50%"; msgObj.style.top = "50%"; msgObj.style.font="12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif"; msgObj.style.marginLeft = "-225px" ; msgObj.style.marginTop = -75+document.documentElement.scrollTop+"px"; msgObj.style.width = msgw + "px"; msgObj.style.height =msgh + "px"; msgObj.style.textAlign = "center"; msgObj.style.lineHeight ="25px"; msgObj.style.zIndex = "10001"; var title=document.createElement("h4"); title.setAttribute("id","msgTitle"); title.setAttribute("align","right"); title.style.margin="0"; title.style.padding="3px"; title.style.background=bordercolor; title.style.filter="progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);"; title.style.opacity="0.75"; title.style.border="1px solid " + bordercolor; title.style.height="18px"; title.style.font="12px Verdana, Geneva, Arial, Helvetica, sans-serif"; title.style.color="white"; title.style.cursor="pointer"; title.innerHTML="关闭窗口"; title.onclick=function(){ document.body.removeChild(bgObj); document.getElementById("msgDiv").removeChild(title); document.body.removeChild(msgObj); } document.body.appendChild(msgObj); document.getElementById("msgDiv").appendChild(title); var txt=document.createElement("p"); txt.style.margin="1em 0" txt.setAttribute("id","msgTxt"); txt.innerHTML=str; document.getElementById("msgDiv").appendChild(txt); } </script></head><body><div style="line-height:22px;clear:both;margin:auto;overflow:hidden;padding-right:5px;padding-left:7px;margin-left:7px;float:left;background-color:#D8EEDB;height:22px;border:1px solid #528ABD;" onclick="sAlert('建站教程 http://www.wfuyu.com! <br> 你好，请单击右上角“关闭窗口”关闭');">请点击这里！</div></body></html>提示：可修改后代码再运行!
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