/*******声明maya0,定义brOK,mie,aver,aname变量的初始状态*******/
var maya0;
var brOK=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;
/*************************************************************/

/****检测浏览器状态****/
function checkbrOK()
{if(aname.indexOf("Internet Explorer")!=-1)
   {if(aver>=4) brOK=navigator.javaEnabled();
    mie=true;//检测是否ie
   }
 if(aname.indexOf("Netscape")!=-1)  
   {if(aver>=4) brOK=navigator.javaEnabled();}
}
/**********************/

var vmin=2;
var vmax=5;
var vr=2;
var timer1;
var xx,yy;
var xx1,yy1;

function maya(mayaname,width,height)
{this.named=mayaname;//maya.named
 this.vx=vmin+vmax*Math.random();//maya.vx
 this.vy=vmin+vmax*Math.random();//maya.vy
 this.w=width;//maya.w
 this.h=height;//maya.h
 this.xx=0;//maya.xx
 this.yy=0;//maya.yy
 this.timer1=null;//maya.timer1
}


/********定义movemaya函数功能，实现移动方式和路径********/
function movemaya(mayaname)
{
 if(brOK)
  {eval("maya="+mayaname);
   if(!mie)//如果不是ie
    {pageX=window.pageXOffset;
     pageW=window.innerWidth;
     pageY=window.pageYOffset;
     pageH=window.innerHeight;
    }
   else
    {pageX=window.document.body.scrollLeft;
     //pageW=window.document.body.offsetWidth-8;
	 pageW=window.document.body.offsetWidth-80;
     //pageY=window.document.body.scrollTop;
	 pageY=window.document.body.scrollTop+80;
     //pageH=window.document.body.offsetHeight;
     pageH=window.document.body.offsetHeight-80;
    } 

   maya.xx=maya.xx+maya.vx;
   maya.yy=maya.yy+maya.vy;
   
   maya.vx+=vr*(Math.random()-0.5);
   maya.vy+=vr*(Math.random()-0.5);
   if(maya.vx>(vmax+vmin))  maya.vx=(vmax+vmin)*2-maya.vx;
   if(maya.vx<(-vmax-vmin)) maya.vx=(-vmax-vmin)*2-maya.vx;
   if(maya.vy>(vmax+vmin))  maya.vy=(vmax+vmin)*2-maya.vy;
   if(maya.vy<(-vmax-vmin)) maya.vy=(-vmax-vmin)*2-maya.vy;


   if(maya.xx<=pageX)
     {maya.xx=pageX;
      maya.vx=vmin+vmax*Math.random();
     }
   if(maya.xx>=pageX+pageW-maya.w)
     {maya.xx=pageX+pageW-maya.w;
      maya.vx=-vmin-vmax*Math.random();
     }
   if(maya.yy<=pageY)
     {maya.yy=pageY;
      maya.vy=vmin+vmax*Math.random();
     }
   if(maya.yy>=pageY+pageH-maya.h)
     {maya.yy=pageY+pageH-maya.h;
      maya.vy=-vmin-vmax*Math.random();
     }

   if(!mie)
      {eval('document.'+maya.named+'.top ='+maya.yy);
       eval('document.'+maya.named+'.left='+maya.xx);
      } 
   else
      {eval('document.all.'+maya.named+'.style.pixelLeft='+maya.xx);
       eval('document.all.'+maya.named+'.style.pixelTop ='+maya.yy); 
      }
   maya.timer1=setTimeout("movemaya('"+maya.named+"')",100);
  }
}
/****************************************/


/******定义stopme函数功能，实现停止移动*******/
function stopme(mayaname)
{if(brOK)
  {//alert(mayaname)
   eval("maya="+mayaname);
   if(maya.timer1!=null)
    {clearTimeout(maya.timer1)}
  }
}
/**********************/


/******定义cnnewsstart函数功能，实现移动******/
function cnnewsstart()
{checkbrOK(); 
 maya0=new maya("maya0",70,80);
  if(brOK) 
   { movemaya("maya0");
    }
}
/**********************************/

function startme(mayaname)
{
	movemaya("maya0");
}