var lastScrollY=0;
var userClose = false;
function fad_auothide(){
	var _c_w = document.documentElement.clientWidth || document.body.clientWidth;
	if(_c_w<=1130){
		document.getElementById("float_ad_left").style.visibility="hidden"; 
		document.getElementById("float_ad_right").style.visibility="hidden";
		return true;
	} else if(!userClose){
		document.getElementById("float_ad_left").style.visibility="visible"; 
		document.getElementById("float_ad_right").style.visibility="visible";
	}
	return false;
}
function fad_heartBeat() {
	if(fad_auothide())return;
	diffY=document.documentElement.scrollTop;
	percent=0.3*(diffY-lastScrollY);
	if(percent>0)percent=Math.ceil(percent);
	else percent=Math.floor(percent);
	document.getElementById("float_ad_left").style.top=(parseInt(document.getElementById("float_ad_left").style.top,10)+percent)+"px";
	document.getElementById("float_ad_right").style.top=(parseInt(document.getElementById("float_ad_right").style.top,10)+percent)+"px";
	lastScrollY=lastScrollY+percent;	
}
function fad_hide_left() {
	userClose = true;
	document.getElementById("float_ad_left").style.visibility="hidden"; 
}
function fad_hide_right() {
	userClose = true;
	document.getElementById("float_ad_right").style.visibility="hidden";
}

document.write("<DIV id='float_ad_left' style='Z-INDEX: 10; LEFT: 6px; POSITION: absolute; TOP: 105px; width:85px;'>");
document.write("<div style=\"margin-bottom:5px; width:85px; height:145px;\"><a href=\'http://www.elitejx.com\' target=_blank><img src=\'http://www.21food.cn/channel/ad/alt_85.gif\' WIDTH=85 HEIGHT=145 border=0 id=sinad3></a></div>");
document.write("<img src='/include/v2/images/fad_close.gif' onClick='javascript:fad_hide_left()' width='38' height='14' border='0' vspace='3'   alt='关闭广告'></div>");

document.write("<DIV id='float_ad_right' style='Z-INDEX: 10; right:6px; POSITION: absolute; TOP: 105px; width:85px;'>");
document.write("<div style=\"margin-bottom:5px; width:85px; height:145px;\"><a href=\"http://jksp.21food.cn\" target=_blank><img src=\"http://www.21food.cn/images/gg/jksp85x145.gif\" width=\"85\" height=\"145\" border=0></a></div>");
//document.write("<div style=\"margin-bottom:5px; width:85px; height:145px;\"><a href=\"http://www.21food.cn/html/gg/xiuxian\" target=_blank><img src=\"http://www.21food.cn/images/gg/snackex3.gif\" width=\"85\" height=\"145\" border=0></a></div>");
document.write("<img src='/include/v2/images/fad_close.gif' onClick='javascript:fad_hide_right()' width='38' height='14' border='0' vspace='3' alt='关闭广告'></div>");

window.setInterval("fad_heartBeat()",5);