var brOK=false;
var mie=false;
var vmin=2;
var vmax=5;
var vr=3;
var timer1;
var jobad;
var jfdh;

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+50;		//初始左侧位置
			pageW=window.document.body.offsetWidth-150;		//左侧停止位置。 减去图片宽度。
			pageY=window.document.body.scrollTop;			//初始top位置
			pageH=window.document.body.offsetHeight-212;	// 下方停止位置。 减去图片高度。
		}
		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.xx>=680)
		{
			chip.xx=chip.xx-20;
			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 (document.getElementById)
		{
			document.getElementById(chip.named).style.left=chip.xx;
			document.getElementById(chip.named).style.top =chip.yy;
		}
		else if(document.layers)
		{
			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+"')",150);
	}
}

function stopme(chipname)
{
	if(brOK)
	{
		eval("chip="+chipname);
		if(chip.timer1!=null)
		{
			clearTimeout(chip.timer1);
		}
	}
}

function jobad()
{
	if(navigator.appName.indexOf("Internet Explorer")!=-1)
	{
		if(parseInt(navigator.appVersion.substring(0,1))>=4) brOK=navigator.javaEnabled();mie=true;
	}
	if(navigator.appName.indexOf("Netscape")!=-1)
	{
		if(parseInt(navigator.appVersion.substring(0,1))>=4) brOK=navigator.javaEnabled();
	}
	jobad.named="jobad";
	jobad.vx=vmin+vmax*Math.random();
	jobad.vy=vmin+vmax*Math.random();
	jobad.w=1;
	jobad.h=1;
	jobad.xx=0;
	jobad.yy=0;
	jobad.timer1=null;
	movechip("jobad");
}

function floatad(url,imgurl)
{
	document.write('<div id="jobad" style="height:98px;left:0px;position:absolute;top:0px;width:126px; z-index:100;">');
	document.write('<table width="126" border="0" cellpadding="0" cellspacing="0"><tr><td>');
	document.write('<a href="' + url + '" target="_blank" onmouseover=stopme("jobad"); onmouseout=movechip("jobad");>');
	document.write('<img src="' + imgurl + '" border="0" /></a></td></tr></table></div>');
	jobad();

}

function jfdh()
{
	if(navigator.appName.indexOf("Internet Explorer")!=-1)
	{
		if(parseInt(navigator.appVersion.substring(0,1))>=4) brOK=navigator.javaEnabled();mie=true;
	}
	if(navigator.appName.indexOf("Netscape")!=-1)
	{
		if(parseInt(navigator.appVersion.substring(0,1))>=4) brOK=navigator.javaEnabled();
	}
	jfdh.named="jfdh";
	jfdh.vx=vmin+vmax*Math.random();
	jfdh.vy=vmin+vmax*Math.random();
	jfdh.w=1;
	jfdh.h=1;
	jfdh.xx=600;
	jfdh.yy=0;
	jfdh.timer1=null;
	movechip("jfdh");
}

function floatad_jfdh(url,imgurl)
{
	document.write('<div id="jfdh" style="height:141px;left:0px;position:absolute;top:0px;width:109px; z-index:100;">');
	document.write('<table width="109" border="0" cellpadding="0" cellspacing="0"><tr><td>');
	document.write('<a href="' + url + '" target="_blank" onmouseover=stopme("jfdh"); onmouseout=movechip("jfdh");>');
	document.write('<img src="' + imgurl + '" border="0" /></a></td></tr></table></div>');
	jfdh();

}