var nbJour = 15;
    var page = "promoNerf2010.html";
    
     function GetCookie (name) {
		var arg = name + "=";
		var alen = arg.length;
		var clen = document.cookie.length;
		var i = 0;
		while (i < clen) {
		var j = i + alen;
		if (document.cookie.substring(i, j) == arg)
		return getCookieVal (j);
		i = document.cookie.indexOf(" ", i) + 1;
		if (i == 0) break;
		}
		return null;
		}
    
     function SetCookie (name, value) {
     var argv = SetCookie.arguments;
     var argc = SetCookie.arguments.length;
     var expires = (argc > 2) ? argv[2] : null;
     var path = (argc > 3) ? argv[3] : null;
     var domain = (argc > 4) ? argv[4] : null;
     var secure = (argc > 5) ? argv[5] : false;
    
     document.cookie = name + "=" + escape (value) +
     ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
     ((path == null) ? "" : ("; path=" + path)) +
     ((domain == null) ? "" : ("; domain=" + domain)) +
     ((secure == true) ? "; secure" : "");
	 
     }
    
     function DeleteCookie (name) {
     var exp = new Date();
     exp.setTime (exp.getTime() - 1);
     var cval = GetCookie (name);
     document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
     }
    
     var exp = new Date();
     exp.setTime(exp.getTime() + (nbJour*24*60*60*1000));
     function getCookieVal(offset) {
     var endstr = document.cookie.indexOf (";", offset);
     if (endstr == -1)
     endstr = document.cookie.length;
     return unescape(document.cookie.substring(offset, endstr));
     }
    
    
     function verifNbOuverture() {
     var cnerfpm = GetCookie('cnerfpm');
     if (cnerfpm == null) {
     cnerfpm=2;
     SetCookie('cnerfpm', cnerfpm, exp);
     window.location.href = page;
    }
     else {
		 cnerfpm++;
		 SetCookie('cnerfpm', cnerfpm, exp);
     }
     }
    
     verifNbOuverture();