function setCookie(name, value)		//cookies设置
{
	var argv = setCookie.arguments;
	var argc = setCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	if(expires!=null&&expires!="")
	{
		var LargeExpDate = new Date ();
		LargeExpDate.setTime(LargeExpDate.getTime() + (expires*1000*3600*24));
	}
	document.cookie = name + "=" + escape (value)+((expires == null) ? "" : ("; expires=" +LargeExpDate.toGMTString()));
}

function getCookie(name)			//cookies读取
{
	//if(document.cookie=="")alert("由于您没有开启cookie，所以无法使用该功能！请使用前先开启cookie");
	var search = name + "="
	if(document.cookie.length > 0) 
	{
		offset = document.cookie.indexOf(search)
		if(offset != -1) 
		{
			offset += search.length
			end = document.cookie.indexOf(";", offset)
			if(end == -1) end = document.cookie.length
			return unescape(document.cookie.substring(offset, end))
		 }
		else return ""
	}
}