msnMessage.js文件代码：
Code1 /**
2 ** ==================================================================================================
3 ** 类名：msnMessage
4 ** 功能：提供类似MSN消息框
5 ** 示例：
6 --------------------------------------------------------------------------------------------------
7 var MSG = new msnMessage("aa",200,120,"短消息提示：","您有1封消息","今天请我吃饭哈");
8 MSG.show();
9
10 --------------------------------------------------------------------------------------------------
11 ** 作者：juhnpen(在原作者ttyp的基础上做了点改动)
12 ** 邮件：juhnpen@126.com(原作者信箱ttyp@21cn.com)
13 ** 日期：2008-10-13
14 ** ==================================================================================================
15 **/
16 /**
17 ** 消息构造
18 **/
19 function msnMessage(id,width,height,caption,title,message,target,action)
20 {
21 this.id = id;
22 this.title = title;
23 this.caption= caption;
24 this.message= message;
25 this.target = target;
26 this.action = action;
27 this.width = width?width:200;
28 this.height = height?height:120;
29 this.timeout= 300;
30 this.speed = 20;
31 this.step = 1;
32 this.right = screen.width -1;
33 this.bottom = screen.height;
34 this.left = this.right - this.width;
35 this.top = this.bottom - this.height;
36 this.timer = 0;
37 this.pause = false;
38 this.close = false;
39 this.autoHide = true;
40 }
41 /**
42 ** 隐藏消息方法
43 **/
44 msnMessage.prototype.hide = function()
45 {
46 if(this.onunload())
47 {
48 var offset = this.height>this.bottom-this.top?this.height:this.bottom-this.top;
49 var me = this;
50
51 if(this.timer>0)
52 {
53 window.clearInterval(me.timer);
54 }
55 var fun = function()
56 {
57 if(me.pause==false||me.close)
58 {
59 var x = me.left;
60 var y = 0;
61 var width = me.width;
62 var height = 0;
63 if(me.offset>0)
64 {
65 height = me.offset;
66 }
67
68 y = me.bottom - height;
69
70 if(y>=me.bottom)
71 {
72 window.clearInterval(me.timer);
73 me.Pop.hide();
74 }
75 else
76 {
77 me.offset = me.offset - me.step;
78 }
79 me.Pop.show(x,y,width,height);
80 }
81 }
82 this.timer = window.setInterval(fun,this.speed)
83 }
84 }
85 /**
86 ** 消息卸载事件，可以重写
87 **/
88 msnMessage.prototype.onunload = function()
89 {
90 return true;
91 }
92 /**
93 ** 消息命令事件，要实现自己的连接，请重写它
94 **
95 **/
96 msnMessage.prototype.oncommand = function()
97 {
98 this.close = true;
99 this.hide();
100 window.open(this.target);
101 }
102 /**
103 ** 消息显示方法
104 **/
105 msnMessage.prototype.show=function()
106 {
107 var oPopup = window.createPopup(); //IE5.5+
108 this.Pop = oPopup;
109 var w = this.width;
110 var h = this.height;
111 var str = "<DIV style='BORDER-RIGHT: #455690 1px solid; BORDER-TOP: #a6b4cf 1px solid; Z-INDEX: 99999; LEFT: 0px; BORDER-LEFT: #a6b4cf 1px solid; WIDTH: " + w + "px; BORDER-BOTTOM: #455690 1px solid; POSITION: absolute; TOP: 0px; HEIGHT: " + h + "px; BACKGROUND-COLOR: #c9d3f3'>";
112 str += "<TABLE style='BORDER-TOP: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid' cellSpacing=0 cellPadding=0 width='100%' bgColor=#cfdef4 border=0>";
113 str += "<TR>";
114 str += "<TD style='FONT-SIZE: 12px;COLOR: #0f2c8c' width=30 height=24></TD>";
115 str += "<TD style='PADDING-LEFT: 4px; FONT-WEIGHT: normal; FONT-SIZE: 12px; COLOR: #1f336b; PADDING-TOP: 4px' vAlign=center width='100%'>" + this.caption + "</TD>";
116 str += "<TD style='PADDING-RIGHT: 2px; PADDING-TOP: 2px' vAlign=center align=right width=19>";
117 str += "<SPAN title=关闭 style='FONT-WEIGHT: bold; FONT-SIZE: 12px; CURSOR: hand; COLOR: red; MARGIN-RIGHT: 4px' id='btSysClose' >×</SPAN></TD>";
118 str += "</TR>";
119 str += "<TR>";
120 str += "<TD style='PADDING-RIGHT: 1px;PADDING-BOTTOM: 1px' colSpan=3 height=" + (h-28) + ">";
121 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>";
122 str += "<DIV style='WORD-BREAK: break-all' align=left><A href='javascript:void(0)' hidefocus=true id='btCommand'><FONT color=#ff0000>" + this.message + "</FONT></A></DIV>";
123 str += "</DIV>";
124 str += "</TD>";
125 str += "</TR>"
126 str += "</TABLE>";
127 str += "</DIV>";
128 oPopup.document.body.innerHTML = str;
129 this.offset = 0;
130 var me = this;
131 oPopup.document.body.onmouseover = function(){me.pause=true;}
132 oPopup.document.body.onmouseout = function(){me.pause=false;}
133 var fun = function()
134 {
135 var x = me.left;
136 var y = 0;
137 var width = me.width;
138 var height = me.height;
139 if(me.offset>me.height)
140 {
141 height = me.height;
142 }
143 else
144 {
145 height = me.offset;
146 }
147 y = me.bottom - me.offset;
148 if(y<=me.top)
149 {
150 me.timeout--;
151 if(me.timeout==0)
152 {
153 window.clearInterval(me.timer);
154 if(me.autoHide)
155 {
156 me.hide();
157 }
158 }
159 }
160 else
161 {
162 me.offset = me.offset + me.step;
163 }
164 me.Pop.show(x,y,width,height);
165 }
166 this.timer = window.setInterval(fun,this.speed)
167 var btClose = oPopup.document.getElementById("btSysClose");
168 btClose.onclick = function()
169 {
170 me.close = true;
171 me.hide();
172 }
173 var btCommand = oPopup.document.getElementById("btCommand");
174 btCommand.onclick = function()
175 {
176 me.oncommand();
177 }
178 }
179 /**
180 ** 设置速度方法
181 **/
182 msnMessage.prototype.speed = function(s)
183 {
184 var t = 20;
185 try
186 {
187 t = praseInt(s);
188 }
189 catch(e)
190 {}
191 this.speed = t;
192 }
193 /**//*
194 ** 设置步长方法
195 **/
196 msnMessage.prototype.step = function(s)
197 {
198 var t = 1;
199 try
200 {
201 t = praseInt(s);
202 }
203 catch(e)
204 {}
205 this.step = t;
206 }
207 msnMessage.prototype.rect = function(left,right,top,bottom)
208 {
209 try {
210 this.left = left != null?left:this.right-this.width;
211 this.right = right != null?right:this.left +this.width;
212 this.bottom = bottom !=null?(bottom>screen.height?screen.height:bottom):screen.height;
213 this.top = top !=null?top:this.bottom - this.height;
214 }
215 catch(e)
216 {}
217 }
218
调用代码：
Code<script language="javascript" type="text/javascript">
var msg1 = new msnMessage("aa",200,120,"短消息提示：","您有1封消息","今天请我吃饭哈","11.htm");
msg1.rect(null,null,null,screen.height-50);
msg1.speed = 10;
msg1.step = 5;
//alert(msg1.top);
msg1.show();
//同时两个有闪烁，只能用层代替了，不过层不跨框架
var msg2 = new msnMessage("aa",200,120,"短消息提示：","您有2封消息","好的啊","22.htm");
msg2.rect(100,null,null,screen.height);
msg2.show();
</script>
注意：如果是在asp.net中，js文件中包含的字符通过innerHTML输出后会显示乱码，作如下改动：
1.Web.config中加入 <system.web> <globalization requestEncoding="utf-8" responseEncoding="utf-8" /> </system.web>
2.Aspx页面文件中加入
<META http-equiv="content-type" content="text/html; charset=gb2312">
3.在页面加载事件中加入下句：
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
原因是如果js写在asp.net中，一般是不会出现乱码的问题。因为他们具有相同的编码。如果需要引用外部的javascript代码就会有乱码的风险了。一般情况下Asp.net和Javascript的页面编码不是GB2312就是Utf-8 ，如果两者的编码不一致就会产生乱码。解决方法就是想两者的编码进行统一。由于一般情况下Asp.net接受发送请求的编码是Utf-8的，javascript编码默认是Gb2312，故容易出现问题。
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