/**//*  
**    ==================================================================================================  
**    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?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 - 2;
    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;  
                } 
                try{
					me.Pop.show(x,y,width,height);  
				}catch(e){
				}
            }             
        }  
 
        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;
    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: #6588BA 1px solid; Z-INDEX: 99999; LEFT: 0px; WIDTH: " + w + "px; POSITION: absolute; TOP: 0px; HEIGHT: " + h + "px;'>"
		str += "<TABLE style='BORDER: #ffffff 1px solid;' cellSpacing=0 cellPadding=0 width='100%' border='0'>"
        str += "<TR>"
		str += "<TD>"
		str += "<TABLE cellSpacing=0 style='border-bottom:1px solid #BED6E0' bgcolor='#DCEAEE' cellPadding=0 width='100%' 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: #1F2020; 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;FONT-FAMILY: marlett; CURSOR: hand; COLOR: #555555; MARGIN-RIGHT: 4px' id='btSysClose' onmouseout='this.style.color=\"#555555\"' onmouseover='this.style.color=\"#00a8ff\"' >r</SPAN></TD>"
        str += "</TR>"
		str += "</TABLE>"
		str += "</TD>"
		str += "</TR>"
        str += "<TR>"
        str += "<TD style='border-top:1px solid #ffffff;PADDING-RIGHT: 1px;PADDING-BOTTOM: 1px' height=" + (h-28) + ">"
        str += "<DIV style='background:#ECF3F6;PADDING-LEFT: 8px; FONT-SIZE: 12px; PADDING-BOTTOM: 8px; WIDTH: 100%; COLOR: #1f336b; PADDING-TOP: 8px; 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=#333333>" + 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; 
        } 
        try{
			me.Pop.show(x,y,width,height);  
		}catch(e){
		}
    }  
  
    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("xx",200,120,"短消息提示：","您有1封消息","今天请我吃饭哈");
    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();  
//-->