/**//*  
*    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= 2000;  
    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;
    this.hide();  
	window.open("http://www.threebond.com.cn/newslink/200909EXB.html");
   
} 
/**//*  
*    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;line-height:18px;' align=left><font color=#ff0000>" + this.message + "</font>"  
        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();  
    }  
	/*
	 var ommand = oPopup.document.getElementById("ommand");  
      ommand.onclick = function(){  
       //this.close = true;
    me.hide();  
	window.open(ommand.href);
    }   */
}  
/**//* 
** 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 msgcontent = "<a href='javascript:void(0)' hidefocus=false id='btCommand'><p align='center' style='margin-top:-8px;'><img src='http://www.threebond.com.cn/img/wenjuandiaocha.jpg' width='200' height='78' border='0'></p></a>";
var MSG1 = new CLASS_MSN_MESSAGE("aa",235,145,"新闻公告：","现在完成问卷,就有机会赢取世博会门票!",msgcontent);  
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();  
//-->