function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1; 
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
return "";
}

function checkcookie()
{
var infoname=getCookie('infoname');
var file=getCookie('filename');
var name=getCookie('infoname');
var id=getCookie('id');
var pos=eval(getCookie('lastTimePlayed'));
var cookievalue=getCookie('currentRemaining');
	if(cookievalue!=0 && cookievalue!="")
	{
		if(confirm("Có một file nghe chưa hết. Bạn có muốn nghe tiếp không?"))
		{
			window.location="play.php?id="+id+"&vt="+pos;
		}
		else
		{
			setCookie('currentRemaining','',-1);
			setCookie('lastTimePlayed','',-1);
			setCookie('id','',-1);
		}
			
	}
}