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

**     ==================================================================================================  
**/  
  
  
/**//*  
*     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?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);  
         }  

         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  
*/  
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=center width='100%'>" + this.caption + "</TD>"  
         str += "<TD 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' 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);  
                 //屏蔽掉自动隐藏
                // 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){} 
}