背景变暗的div可拖动提示窗口-JS特效-爱易网页

背景变暗的div可拖动提示窗口

日期：2014-05-18　浏览次数：20124 次

以下是HTML网页特效代码，点击运行按钮可查看效果：

以下是程序代码

<!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=utf-8" />
<title>无标题文档</title>
<script language="javascript">
function alertWin(title, msg, w, h){ 
 var titleheight = "22px"; // 提示窗口标题高度 
 var bordercolor = "#666699"; // 提示窗口的边框颜色 
 var titlecolor = "#FFFFFF"; // 提示窗口的标题颜色 
 var titlebgcolor = "#666699"; // 提示窗口的标题背景色
 var bgcolor = "#FFFFFF"; // 提示内容的背景色
 
 var iWidth = document.documentElement.clientWidth; 
 var iHeight = document.documentElement.clientHeight; 
 var bgObj = document.createElement("div"); 
 bgObj.style.cssText = "position:absolute;left:0px;top:0px;width:"+iWidth+"px;height:"+Math.max(document.body.clientHeight, iHeight)+"px;filter:Alpha(Opacity=30);opacity:0.3;background-color:#000000;z-index:101;";
 document.body.appendChild(bgObj); 
 
 var msgObj=document.createElement("div");
 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;";
 document.body.appendChild(msgObj);
 
 var table = document.createElement("table");
 msgObj.appendChild(table);
 table.style.cssText = "margin:0px;border:0px;padding:0px;";
 table.cellSpacing = 0;
 var tr = table.insertRow(-1);
 var titleBar = tr.insertCell(-1);
 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;
 titleBar.style.paddingLeft = "10px";
 titleBar.innerHTML = title;
 var moveX = 0;
 var moveY = 0;
 var moveTop = 0;
 var moveLeft = 0;
 var moveable = false;
 var docMouseMoveEvent = document.onmousemove;
 var docMouseUpEvent = document.onmouseup;
 titleBar.onmousedown = function() {
  var evt = getEvent();
  moveable = true; 
  moveX = evt.clientX;
  moveY = evt.clientY;
  moveTop = parseInt(msgObj.style.top);
  moveLeft = parseInt(msgObj.style.left);
  
  document.onmousemove = function() {
   if (moveable) {
    var evt = getEvent();
    var x = moveLeft + evt.clientX - moveX;
    var y = moveTop + evt.clientY - moveY;
    if ( x > 0 &&( x + w < iWidth) && y > 0 && (y + h < iHeight) ) {
     msgObj.style.left = x + "px";
     msgObj.style.top = y + "px";
    }
   } 
  };
  document.onmouseup = function () { 
   if (moveable) { 
    document.onmousemove = docMouseMoveEvent;
    document.onmouseup = docMouseUpEvent;
    moveable = false; 
    moveX = 0;
    moveY = 0;
    moveTop = 0;
    moveLeft = 0;
   } 
  };
 }
 
 var closeBtn = tr.insertCell(-1);
 closeBtn.style.cssText = "cursor:pointer; padding:2px;background-color:" + titlebgcolor;
 closeBtn.innerHTML = "<span style='font-size:15pt; color:"+titlecolor+";'>×</span>";
 closeBtn.onclick = function(){ 
  document.body.removeChild(bgObj); 
  document.body.removeChild(msgObj); 
 } 
 var msgBox = table.insertRow(-1).insertCell(-1);
 msgBox.style.cssText = "font:10pt '宋体';";
 msgBox.colSpan  = 2;
 msgBox.innerHTML = msg;
 
    // 获得事件Event对象，用于兼容IE和FireFox
    function getEvent() {
     return window.event || arguments.callee.caller.arguments[0];
    }
} 
</script>
</head>
<body>
<input type="button" value="点这里" onclick="alertWin('标题','这里是内容',300,200);" />
</body>
</html></font>
<a hr</div></div>

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