/*
 *
 * Copyright(c) 2008,   All rights reserved by NJMCC。
 * 文件名称: 
 * desc    : 手机证券广告窗口JS
 *@author  ：熊亦兰
 *@date    ：2008-05-07 
 *@version 1.0
 *@修改记录:
 *
**/
var   brOK=false;   
var   mie=false;   
var   aver=parseInt(navigator.appVersion.substring(0,1));   
var   aname=navigator.appName;  
function   checkbrOK()   
{
	if(aname.indexOf("Internet Explorer")!=-1)   
	{
		if(aver>=4)   brOK=navigator.javaEnabled(); 
	  	mie=true;   
	 }
	 if(aname.indexOf("Netscape")!=-1)
	 {
		 if(aver>=4)   brOK=navigator.javaEnabled();
	}
} 

var   vmin=2;   
var   vmax=5;   
var   vr=2;   
var   timer1; 

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

function   movechip(chipname)   
{   
if(brOK)   
  {
	  eval("chip="+chipname);   
  	  if(!mie){
		  pageX=window.pageXOffset;   
		  pageW=window.innerWidth;   
		  pageY=window.pageYOffset;   
		  pageH=window.innerHeight;   
	  }else{
		  pageX=window.document.body.scrollLeft;   
		  pageW=window.document.body.offsetWidth-8;   
		  pageY=window.document.body.scrollTop;   
		  pageH=window.document.body.offsetHeight;   
	  }     
	  chip.xx=chip.xx+chip.vx;   
	  chip.yy=chip.yy+chip.vy;   
	  chip.vx+=vr*(Math.random()-0.5);   
	  chip.vy+=vr*(Math.random()-0.5);   
	  if(chip.vx>(vmax+vmin))     chip.vx=(vmax+vmin)*2-chip.vx;   
	  if(chip.vx<(-vmax-vmin))   chip.vx=(-vmax-vmin)*2-chip.vx;   
	  if(chip.vy>(vmax+vmin))     chip.vy=(vmax+vmin)*2-chip.vy;   
	  if(chip.vy<(-vmax-vmin))   chip.vy=(-vmax-vmin)*2-chip.vy;   
	  if(chip.xx<=pageX){
		  chip.xx=pageX;   
		  chip.vx=vmin+vmax*Math.random();   
	  }   
	  if(chip.xx>=pageX+pageW-chip.w){
		  chip.xx=pageX+pageW-chip.w;   
		  chip.vx=-vmin-vmax*Math.random();
	  }   
  	if(chip.yy<=pageY){
		chip.yy=pageY;   
		chip.vy=vmin+vmax*Math.random();   
	  }   
	  if(chip.yy>=pageY+pageH-chip.h)   
	  {
		  chip.yy=pageY+pageH-chip.h;   
		  chip.vy=-vmin-vmax*Math.random();   
	  }   
	  if(!mie)   
	  {
		  eval('document.'+chip.named+'.top   ='+chip.yy);   
		  eval('document.'+chip.named+'.left='+chip.xx);   
	  }else{
		  eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);   
		  eval('document.all.'+chip.named+'.style.pixelTop   ='+chip.yy);
      }   
	  chip.timer1=setTimeout("movechip('"+chip.named+"')",120);   
  }   
}   
function   stopme(chipname)   
{
	if(brOK)   
	  {   
		  eval("chip="+chipname);   
		  if(chip.timer1!=null)   
		  {clearTimeout(chip.timer1)}   
	}   
}   
function   closechip(chipname)   
{	
	if(brOK)	stopme(chipname);
	eval("chip="+chipname);   
	eval('document.all.'+chip.named+'.style.display=\"none\"');
}   

var   ad_stock;   
var   chip;   
function   ad_show(chipname)   
{
	checkbrOK();   
  	ad_stock=new   Chip('ad_stock',60,80);   
  	if(brOK)     
    {
		movechip('ad_stock');   
    }   
}   

browserName   =   navigator.appName;   
browserVersion   =   navigator.appVersion.charAt(0);   
changeimgok   =   
  (browserName   ==   "Netscape"   &&   browserVersion   >=   3)   ||   
  (browserName   ==   "Microsoft Internet Explorer"   &&   browserVersion   >=   4)