var yy_url = "http://bbs.guolan.com";
var yy_pic = "http://www.guolan.com/images/bbs.gif";
var yy_titile = "中国兰花网 - 兰友社区";
var yy_brOK = false;
var yy_mie = false;
var vmin = 2;
var vmax = 5;
var vr = 1;
var yy_timer;
function yy_movechip(chipname)
{
	if(yy_brOK)
	{
		eval("chip="+chipname);
		if(!yy_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.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(!yy_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.yy_timer=setTimeout("yy_movechip('"+chip.named+"')",80);
	}
}

function yy_stopme(chipname)
{
	if(yy_brOK)
	{
		eval("chip="+chipname);
		if(chip.yy_timer!=null)
		{
			clearTimeout(chip.yy_timer)
		}
	}
}

if(navigator.appName.indexOf("Internet Explorer")!=-1){
	if(parseInt(navigator.appVersion.substring(0,1))>=4) yy_brOK=navigator.javaEnabled();yy_mie=true;
}
if(navigator.appName.indexOf("Netscape")!=-1){
	if(parseInt(navigator.appVersion.substring(0,1))>=4) yy_brOK=navigator.javaEnabled();
}

function outMove(divname,isflash,pic,alt,url,flashurl,width,height){
	document.write('<span id="' + divname + '" style="height:49px;left:178px;position:absolute;top:237px;width:70px; z-index:1000">');
	if (isflash>0){
		document.write("<EMBED src='" + flashurl + "' quality=high  WIDTH='" + width + "' HEIGHT='" + height + "' TYPE='application/x-shockwave-flash'></EMBED>");
	}else{
		document.write("<a href='" + url + "' target=_blank onmouseover=yy_stopme('" + divname + "'); onmouseout=yy_movechip('" + divname + "');>");
		document.write("<img src='" + pic + "' alt='" + alt + "' border=0 width='" + width + "' height='" + height + "'></a>");
	}
	document.write("</span>");
}

function yy_addMove(divname,isflash,pic,alt,url,flashurl,width,height,x,y){
	outMove(divname,isflash,pic,alt,url,flashurl,width,height);
	eval("theDiv="+divname);
	theDiv.named=divname;
	theDiv.vx=vmin+vmax*Math.random();
	theDiv.vy=vmin+vmax*Math.random();
	theDiv.w=1;
	theDiv.h=1;
	theDiv.xx=x;
	theDiv.yy=y;
	theDiv.yy_timer=null;
	yy_movechip(divname);
}

yy_addMove("YY_Piao", 0, yy_pic, yy_titile, yy_url, "", 86, 108, 1, 1);