JavaScript写的一个DIV 弹出网页对话框

  网上搜索到的代码,做了一些修改该,

  修正无法自定义颜色,修正IE8 下错误,以及其他小BUG 兼容IE6~8以及火狐

  可以自定义

  // 提示窗口标题高度

  // 提示窗口的边框颜色

  // 提示窗口的标题颜色

  // 提示窗口的标题背景色

  // 提示内容的背景色

  // 提示内容文字对齐方式

  功能 可以弹出一个大DIV遮住页面(IE下 透明) 然后在屏幕中央显示显示一个小DIV

  可用作功能提示 操作提示 以及公告等

  提示内容可以使带HTML标记的文字,也可是一个页面链接

  

复制代码 代码如下:

  function MessageBox()

  {

  this.titleheight = "21"; // 提示窗口标题高度

  this.bordercolor = "#666699"; // 提示窗口的边框颜色

  this.titlecolor = "#1259a4"; // 提示窗口的标题颜色

  this.titlebgcolor = "#e4f1fb"; // 提示窗口的标题背景色

  this.bgcolor = "#FFFFFF"; // 提示内容的背景色

  this.MsgAlign="left";

  this.Show=function(title, msg, framesrc, w, h)

  {

  var iWidth = document.documentElement.clientWidth;

  var iHeight = document.documentElement.clientHeight+document.documentElement.scrollTop*2;

  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 "+this.bordercolor+";background-color:"+this.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:"+(w-84)+"px;height:"+this.titleheight+"px;text-align:left;padding:3px;margin:0px;font:bold 13px '宋体';color:"+this.titlecolor+";cursor:move;background-color:" + this.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:" + this.titlebgcolor;

  closeBtn.innerHTML = "<span style="font-size:10pt;color:"+this.titlecolor+";" style="font-size:10pt;color:"+this.titlecolor+";" id='closeBtn'>×关闭窗口";

  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;

  if(framesrc != "")

  {

  msg = "<iframe name='frmAlertWin' id='frmAlertWin' src="about:blank" src="about:blank" frameborder=0 marginwidth=0 marginheight=0 style='height:"+(h-this.titleheight-10)+"px;width:100%;'></iframe>";

  }

  msgBox.innerHTML = "<div style="\" style="\""text-align:"+this.MsgAlign+";\">"+msg+"</div>";

  if(document.getElementById("frmAlertWin") != null)

  {

  document.getElementById("frmAlertWin").src = framesrc;

  }

  function getEvent(){

  return window.event || arguments.callee.caller.arguments[0];

  }

  }

  }

  调用方式

  var msgbox=new MessageBox();

  msgbox.Show('站内公告',"小小提示","",500,220);///参数:标题,内容(提示为连接页面时可为空),连接页面地址(使用文字是可为空),宽度,高度

  要注意的是如果在页面加载时就要弹出提示 请将调用代码放在body标记以后 否则在IE8下回出现错误