弹出层并锁屏..做登录用
2012-1-30 17:31 Monday  

分类: HTML 评论(38) 浏览(11342)

<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
*{margin:0;padding:0;}
</style>
</head>

<body>
   <p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>
   <p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p><p>测试</p>
   <input type="button" value="点击这里" onclick="sAlert('测试效果<br/>嗯!效果还不错!');" />

<script type="text/javascript" language="javascript">
function sAlert(str){
   var msgw,msgh,bordercolor;
   msgw=400;//提示窗口的宽度
   msgh=100;//提示窗口的高度
   titleheight=25 //提示窗口标题高度
   bordercolor="#336699";//提示窗口的边框颜色
   titlecolor="#99CCFF";//提示窗口的标题颜色

   var sWidth,sHeight;
   sWidth=document.body.offsetWidth;//浏览器工作区域内页面宽度
   sHeight=screen.height;//屏幕高度(垂直分辨率)


   //背景层(大小与窗口有效区域相同,即当弹出对话框时,背景显示为放射状透明灰色)
   var bgObj=document.createElement("div");//创建一个div对象(背景层)
   //定义div属性,即相当于
   //<div id="bgDiv" style="position:absolute; top:0; background-color:#777; filter:progid:DXImagesTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75); opacity:0.6; left:0; width:918px; height:768px; z-index:10000;"></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);//在body内添加该div对象


   var msgObj=document.createElement("div")//创建一个div对象(提示框层)
   //定义div属性,即相当于
   //<div id="msgDiv" align="center" style="background-color:white; border:1px solid #336699; position:absolute; left:50%; top:50%; font:12px/1.6em Verdana,Geneva,Arial,Helvetica,sans-serif; margin-left:-225px; margin-top:npx; width:400px; height:100px; text-align:center; line-height:25px; z-index:100001;"></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");//创建一个h4对象(提示框标题栏)
   //定义h4的属性,即相当于
   //<h4 id="msgTitle" align="right" style="margin:0; padding:3px; background-color:#336699; filter:progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100); opacity:0.75; border:1px solid #336699; height:18px; font:12px Verdana,Geneva,Arial,Helvetica,sans-serif; color:white; cursor:pointer;" onclick="">关闭</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";
   title.onclick=removeObj;

   var button=document.createElement("input");//创建一个input对象(提示框按钮)
   //定义input的属性,即相当于
   //<input type="button" align="center" style="width:100px; align:center; margin-left:250px; margin-bottom:10px;" value="关闭">
   button.setAttribute("type","button");
   button.setAttribute("value","关闭");
   button.style.width="60px";
   button.style.align="center";
   button.style.marginLeft="250px";
   button.style.marginBottom="10px";
   button.style.background=bordercolor;
   button.style.border="1px solid "+ bordercolor;
   button.style.color="white";
   button.onclick=removeObj;

   function removeObj(){//点击标题栏触发的事件
     document.body.removeChild(bgObj);//删除背景层Div
     document.getElementById("msgDiv").removeChild(title);//删除提示框的标题栏
     document.body.removeChild(msgObj);//删除提示框层
   }
   document.body.appendChild(msgObj);//在body内添加提示框div对象msgObj
   document.getElementById("msgDiv").appendChild(title);//在提示框div中添加标题栏对象title

   var txt=document.createElement("p");//创建一个p对象(提示框提示信息)
   //定义p的属性,即相当于
   //<p style="margin:1em 0;" id="msgTxt">测试效果</p>
   txt.style.margin="1em 0"
   txt.setAttribute("id","msgTxt");
   txt.innerHTML=str;//来源于函数调用时的参数值
   document.getElementById("msgDiv").appendChild(txt);//在提示框div中添加提示信息对象txt
   document.getElementById("msgDiv").appendChild(button);//在提示框div中添加按钮对象button
}
</script>
</body>
</html>

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