function  getCookie(name){  
	var prefix = name + "=";
  var cookieStartIndex = document.cookie.indexOf(prefix);
  if(cookieStartIndex == -1)  return  null;
  var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length);  
	if (cookieEndIndex == -1) cookieEndIndex = document.cookie.length;
  return  unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex)); 
}
function setCookie(name, value, expires, path, domain, secure){  
	var curCookie = name + "=" + escape(value) + 
                 ((expires) ? "; expires=" + expires.toGMTString() : "") +
                 ((path) ? "; path=" + path : "") +
                 ((domain) ? "; domain=" + domain : "") +
                 ((secure) ? "; secure" : "");
                 document.cookie = curCookie;
}
function vote(id, option){
		var date = new Date();
		var expireDay = 3600*24;
		date.setTime(date.getTime()+expireDay);
		document.getElementById("div_vote").style.display = "None";
		document.getElementById("div_after_voted").style.display = "Block";
		var voted_id = "voted" + id;
		setCookie(voted_id,"true",date);
		var vote_img = new Image();
		vote_img.src = "/free-wallpaper/_voter.php?id=" + id + "&option=" + escape(option);
}