简单实现点击按钮弹出遮罩层，兼容火狐浏览器。在火狐、IE6、7下都是可以拖动的，但是在IE8下有点小问题，不能拖动，也希望高手们帮忙修正，初次写弹出层，分享给大家。 示例： <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br /> <html xmlns="http://www.w3.org/1999/xhtml"><br /> <head><br /> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><br /> <title>兼容FF/IE的可移动弹出层</title><style type="text/css"><br /> .button1 {background: #ebebeb;<br /> border: 1px solid #888888;<br /> color:#333333;<br /> font-family: Arial, Helvetica, sans-serif;<br /> font-size: 12px;<br /> height:23px;<br /> cursor:pointer }<br /> </style><br /> <script language="javascript"><br /> function alertWin(title, msg, w, h){<br /> var s=document.getElementsByTagName("select"); //--------------把所有select标签捉住<br /> for(var j=0;j<s.length;j++){s[j].style.display="none";} //--------------设为不显示，再进行下面操作<br /> var titleheight = "20px"; // 提示窗口标题高度<br /> var bordercolor = "#666699"; // 提示窗口的边框颜色<br /> var titlecolor = "#FFFFFF"; // 提示窗口的标题颜色<br /> var titlebgcolor = "#1d5798"; // 提示窗口的标题背景色<br /> var bgcolor = "#FFFFFF"; // 提示内容的背景色<br /> var iWidth = document.documentElement.clientWidth;<br /> var iHeight = document.documentElement.clientHeight;<br /> var bgObj = document.createElement("div");<br /> bgObj.style.cssText = "position:absolute;left:0px;top:0px;width:"+iWidth+"px;height:"+Math.max(document.body.clientHeight, iHeight)+"px;filter:Alpha(Opacity=10);opacity:0.1;background-color:#000000;z-index:101;";<br /> document.body.appendChild(bgObj);<br /> var msgObj=document.createElement("div");<br /> msgObj.style.cssText = "position:absolute;font:11px '宋体';top:"+(iHeight-h)/2+"px;left:"+(iWidth-w) /2+"px;width:"+w+"px;height:"+h+"px;text-align:center;border:1px solid "+bordercolor+";background-color:"+bgcolor+";padding:1px;line-height:22px;z-index:102;";<br /> document.body.appendChild(msgObj);<br /> var table = document.createElement("table");<br /> msgObj.appendChild(table);<br /> table.style.cssText = "margin:0px;border:0px;padding:0px;";<br /> table.cellSpacing = 0;<br /> var tr = table.insertRow(-1);<br /> var titleBar = tr.insertCell(-1);<br /> titleBar.style.cssText = "width:100%;height:"+titleheight+"px;text-align:left;padding:3px;margin:0px;font:bold 13px '宋体';color:"+titlecolor+";border:1px solid " + bordercolor + ";cursor:move;background-color:" + titlebgcolor;<br /> titleBar.style.paddingLeft = "10px";<br /> titletitleBar.innerHTML = title;<br /> var moveX = 0;<br /> var moveY = 0;<br /> var moveTop = 0;<br /> var moveLeft = 0;<br /> var moveable = false;<br /> var docMouseMoveEvent = document.onmousemove;<br /> var docMouseUpEvent = document.onmouseup;<br /> titleBar.onmousedown = function() {<br /> var evt = getEvent();<br /> moveable = true;<br /> moveX = evt.clientX;<br /> moveY = evt.clientY;<br /> moveTop = parseInt(msgObj.style.top);<br /> moveLeft = parseInt(msgObj.style.left);<br /> document.onmousemove = function() {<br /> if (moveable) {<br /> var evt = getEvent();<br /> var x = moveLeft + evt.clientX - moveX;<br /> var y = moveTop + evt.clientY - moveY;<br /> if ( x > 0 &&( x + w < iWidth) && y > 0 && (y + h < iHeight) ) {<br /> msgObj.style.left = x + "px";<br /> msgObj.style.top = y + "px";<br /> }<br /> }<br /> };<br /> document.onmouseup = function () {<br /> if (moveable) {<br /> document.onmousemove = docMouseMoveEvent;<br /> document.onmouseup = docMouseUpEvent;<br /> moveable = false;<br /> moveX = 0;<br /> moveY = 0;<br /> moveTop = 0;<br /> moveLeft = 0;<br /> }<br /> };<br /> }<br /> var closeBtn = tr.insertCell(-1);<br /> closeBtn.style.cssText = "cursor:pointer; padding:2px;background-color:" + titlebgcolor;<br /> closeBtn.innerHTML = "<span style='font-size:15pt; color:"+titlecolor+";'>×</span>";<br /> closeBtn.onclick = function(){<br /> for(var j=0;j<s.length;j++){s[j].style.display="";} //--------------再给select显出来<br /> document.body.removeChild(bgObj);<br /> document.body.removeChild(msgObj);<br /> }<br /> var msgBox = table.insertRow(-1).insertCell(-1);<br /> msgBox.style.cssText = "font:10pt '宋体';";<br /> msgBox.colSpan = 2;<br /> msg="<table><tr><td><form id=form1 action=''>用户名<input type='text' name='textfield' />密码<input type='text' name='textfield2' /></label></form></td></tr><table>";<br /> msgmsgBox.innerHTML = msg;<br /> // 获得事件Event对象，用于兼容IE和FireFox<br /> function getEvent() {<br /> return window.event || arguments.callee.caller.arguments[0];<br /> }<br /> }<br /> </script><br /> </head><br /> <body><br /> <input type="button" value=" 点这里 " onclick="alertWin('标题','这里是内容，弹出层可以移动，弹出层可以关闭',600,150);" /><br /> <select name="select" style="width: 150px"><br /> <option value="1">雅思考试</option><br /> <option value="2"><b>托福</b>考试</option><br /> <option value="3">SAT考试</option><br /> <option value="4">GMAT考试</option><br /> </select><br /> </body><br /> </html> <div style="text-align:center;margin:30px 0 0 0;"><hr style="color:#999;height:1px;">如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></div>提示：可修改后代码再运行! 文章导航 CSS切换文本输入框input为英文输入模式JavaScript动态弹出层，点击缓缓关闭效果
