function getCookieVal (offset) {
	var endstr = document.cookie.indexOf (";", offset);
	if (endstr == -1) {
	  endstr = document.cookie.length;
	}
	return unescape(document.cookie.substring(offset, endstr));
}

function GetCookie (name) {
	var temp = name + "=";
	var tempLen = temp.length;
	var cookieLen = document.cookie.length;
	var i = 0;
	while (i < cookieLen) {
		var j = i + tempLen;
		if (document.cookie.substring(i, j) == temp) {
			return getCookieVal(j);
		}
	   	i = document.cookie.indexOf(" ", i) + 1;
	   	if (i == 0) break;
	}
	return null;
}

function SetCookie (name,value,expiresDate,path,domain,secure) {
	document.cookie = name + "=" + escape (value) +
		((expiresDate) ? "; expires=" + expiresDate.toGMTString() : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
}

	var d = new Date();

	d.setTime(d.getTime() + (60 * 60 * 12000));


 	var abit = document.cookie;
  	var begin = abit.indexOf("; bit=");

  	if (begin == -1) {
    	begin = abit.indexOf("bit=");
    	if (begin != 0) SetCookie("bit", '12208957583810363600', d);
	}

	
  var refer = '';

	var cookiedata = GetCookie('bit');