网页消息框

<HTML><HEAD>
<SCRIPT language=JavaScript>
<!--

/**//*
**     ==================================================================================================
**     类名：CLASS_MSN_MESSAGE
**     功能：提供类似MSN消息框
**     示例：
     ---------------------------------------------------------------------------------------------------

             var MSG = new CLASS_MSN_MESSAGE("aa",200,120,"短消息提示：","您有1封消息","今天请我吃饭哈");
                 MSG.show();

     ---------------------------------------------------------------------------------------------------
**     作者：ttyp
**     邮件：ttyp@21cn.com
**     日期：2005-3-18
**     ==================================================================================================
**/

/**//*
*     消息构造
*/
function CLASS_MSN_MESSAGE(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?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
*/
CLASS_MSN_MESSAGE.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);
         }

         this.timer = window.setInterval(fun,this.speed)
     }
}

/**//*
*     消息卸载事件，可以重写
*/
CLASS_MSN_MESSAGE.prototype.onunload = function() {
     return true;
}
/**//*
*     消息命令事件，要实现自己的连接，请重写它
*
*/
CLASS_MSN_MESSAGE.prototype.oncommand = function(){
     //this.close = true;
window.open(this.action,this.target);
     this.hide();
}

/**//*
*     消息显示方法
*/
CLASS_MSN_MESSAGE.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; BORDER-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' cellSpacing=0 cellPadding=0 width='100%' bgColor=#cfdef4 border=0>"
         str += "<TR>"
         str += "<TD 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' valign=middle width='100%'>" + this.caption + "</TD>"
         str += "<TD style='PADDING-RIGHT: 2px; PADDING-TOP: 2px' valign=middle align=right width=19>"
         str += "<SPAN title=关闭 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' 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' align=left><A 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
**/
CLASS_MSN_MESSAGE.prototype.speed = function(s){
     var t = 20;
     try {
         t = praseInt(s);
     } catch(e){}
     this.speed = t;
}
/**//*
** 设置步长方法
**/
CLASS_MSN_MESSAGE.prototype.step = function(s){
     var t = 1;
     try {
         t = praseInt(s);
     } catch(e){}
     this.step = t;
}

CLASS_MSN_MESSAGE.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){}
}
var MSG1 = new CLASS_MSN_MESSAGE("aa",200,120,"短消息提示：","您有1封消息","今天请我吃饭哈","_blank","http://www.baidu.com");
     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 CLASS_MSN_MESSAGE("aa",200,120,"短消息提示：","您有2封消息","好的啊");
// MSG2.rect(100,null,null,screen.height);
// MSG2.show();
//-->
</SCRIPT>

</HEAD>
<BODY>
</BODY>
</HTML>

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

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。