整理的一个仿msn弹出窗口

由于需要，在网上搜了好多资料，最后觉得这个效果比较适合自己的需要，然后整理成自己喜欢的代码风格，放在这里。

  <script language="javascript" type="text/javascript"><!-- /** =========================================================================== ** 类名：msnMessage ** 功能：提供类似MSN消息框 ** 整理：唐军平 ** 日期：2009-9-1 --------------------------------------------------------------------------- var msg = new msnMessage("hello", 250, 150, "短消息提示：", "您好！您有1封消息：", "下午三点开会！", "_top", urlTo); //这里的_top是打开页面的方式，也可以是_blank,_self，_parent等。根据自己具体的需要设置。 msg .show(); =========================================================================== **/ /** ** 消息构造 **/ function msnMessage(id, width, height, caption, title, message, target, action) { this.id = id; this.title = title; this.caption = caption; this.message = message; this.target = target; this.action = action; this.width = width ? width : 200; this.height = height ? height : 120; this.timeout = 150; this.speed = 20; this.step = 1; this.right = screen.width - 1; this.bottom = screen.height; this.left = this.right - this.width; this.top = this.bottom - this.height; this.timer = 0; this.pause = false; this.close = false; this.autoHide = true; } /** ** 隐藏消息方法 **/ msnMessage.prototype.hide = function() { if (this.onunload()) { var offset = this.height > this.bottom - this.top ? this.height : this.bottom - this.top; var me = this; if (this.timer > 0) { window.clearInterval(me.timer); } var fun = function() { if (me.pause == false || me.close) { var x = me.left; var y = 0; var width = me.width; var height = 0; if (me.offset > 0) { height = me.offset; } y = me.bottom - height; if (y >= me.bottom) { window.clearInterval(me.timer); me.Pop.hide(); } else { me.offset = me.offset - me.step; } me.Pop.show(x, y, width, height); } } this.timer = window.setInterval(fun, this.speed) } } /** ** 消息卸载事件，可以重写 **/ msnMessage.prototype.onunload = function() { return true; } /** ** 消息命令事件，要实现自己的连接，请重写它 ** **/ msnMessage.prototype.oncommand = function() { //this.close = true; window.open(this.action, this.target); this.hide(); } /** ** 消息显示方法 **/ msnMessage.prototype.show = function() { var oPopup = window.createPopup(); //IE5.5+ this.Pop = oPopup; var w = this.width; var h = this.height; var str = "<div style='border-right:#455690 1px solid;border-top: #a6b4cf 1px solid;z-index:99999;left:0px;bolder-left:#a6b4cf 1px solid;width:" + w + "px;border-bottom:#455690 1px solid;position:absolute;top:0px;height:" + h + "px;background-color:#c9d3f3'>"; str += "<table style="BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid" mce_style="BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid" cellSpacing=0 cellPadding=0 width='100%' bgColor=#cfdef4 border=0>"; str += "<tr>"; str += "<td style="font-size:12px;color:#0f2c8c" mce_style="font-size:12px;color:#0f2c8c" width=30 height=24></TD>"; str += "<td style="padding-left:4px;font-weight: normal;font-size:12px;color:#1f336b;padding-top: 4px" mce_style="padding-left:4px;font-weight: normal;font-size:12px;color:#1f336b;padding-top: 4px" vAlign=center width='100%'>" + this.caption + "</td>"; str += "<td style="padding-right: 2px; padding-top: 2px" mce_style="padding-right: 2px; padding-top: 2px" vAlign=center align=right width=19>"; str += "<span title=关闭 style="font-weight: bold;font-size: 12px;cursor:hand;color: red;margin-right: 4px" mce_style="font-weight: bold;font-size: 12px;cursor:hand;color: red;margin-right: 4px" id='btSysClose' >×</span></td>"; str += "</tr>"; str += "<tr>"; str += "<td style="padding-right:1px;padding-bottom: 1px" mce_style="padding-right:1px;padding-bottom: 1px" colSpan=3 height=" + (h - 28) + ">"; str += "<div style='border-right:#b9c9ef 1px solid;padding-right:8px;border-top:#728eb8 1px solid;padding-left:8px;font-size:12px;padding-bottom:8px;border-left:#728eb8 1px solid;width:100%;color:#1f336b;padding-top: 8px;border-bottom:#b9c9ef 1px solid;height:100%'>" + this.title + "<br/><br/>"; str += "<div style="word-break:break-all" mce_style="word-break:break-all" align=left><a href="javascript:void(0)" mce_href="javascript:void(0)" hidefocus=true id='btCommand'><font color=#ff0000>" + this.message + "</font></a></div>"; str += "</div>"; str += "</td>"; str += "</tr>" str += "</table>"; str += "</div>"; oPopup.document.body.innerHTML = str; this.offset = 0; var me = this; oPopup.document.body.onmouseover = function() { me.pause = true; } oPopup.document.body.onmouseout = function() { me.pause = false; } var fun = function() { var x = me.left; var y = 0; var width = me.width; var height = me.height; if (me.offset > me.height) { height = me.height; } else { height = me.offset; } y = me.bottom - me.offset; if (y <= me.top) { me.timeout--; if (me.timeout == 0) { window.clearInterval(me.timer); if (me.autoHide) { me.hide(); } } } else { me.offset = me.offset + me.step; } me.Pop.show(x, y, width, height); } this.timer = window.setInterval(fun, this.speed) var btClose = oPopup.document.getElementById("btSysClose"); btClose.onclick = function() { me.close = true; me.hide(); } var btCommand = oPopup.document.getElementById("btCommand"); btCommand.onclick = function() { me.oncommand(); } } /** ** 设置速度方法 **/ msnMessage.prototype.speed = function(s) { var t = 20; try { t = praseInt(s); } catch (e) { } this.speed = t; } /**//* ** 设置步长方法 **/ msnMessage.prototype.step = function(s) { var t = 1; try { t = praseInt(s); } catch (e) { } this.step = t; } msnMessage.prototype.rect = function(left, right, top, bottom) { try { this.left = left != null ? left : this.right - this.width; this.right = right != null ? right : this.left + this.width; this.bottom = bottom != null ? (bottom > screen.height ? screen.height : bottom) : screen.height; this.top = top != null ? top : this.bottom - this.height; } catch (e) { } } // --></script> 

调用代码 ：

<script language="javascript" type="text/javascript"><!-- displayMessage(); function displayMessage() { var messages = '下午三点开会，准时参加!'; var urlTo = 'messages.aspx'; if (messages) { var msg1 = new msnMessage("hello", 250, 150, "短消息提示：", "您好！", messages, "_top", urlTo); msg1.rect(null, null, null, screen.height - 50); msg1.speed = 10; msg1.step = 5; msg1.show(); } setTimeout("displayMessage()", 10000); } // --></script>  

效果图：