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景变暗的div可拖动提示窗口  

2011-03-14 21:37:43|  分类: web |  标签: |举报 |字号 订阅

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<!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>景变暗的div可拖动提示窗口</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>
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