//Funzioni per la gestione dell'encoding
var END_OF_INPUT = -1;

var base64Chars = new Array(
    'A','B','C','D','E','F','G','H',
    'I','J','K','L','M','N','O','P',
    'Q','R','S','T','U','V','W','X',
    'Y','Z','a','b','c','d','e','f',
    'g','h','i','j','k','l','m','n',
    'o','p','q','r','s','t','u','v',
    'w','x','y','z','0','1','2','3',
    '4','5','6','7','8','9','+','/'
);

var reverseBase64Chars = new Array();
for (var i=0; i < base64Chars.length; i++){
    reverseBase64Chars[base64Chars[i]] = i;
}

var base64Str;
var base64Count;
function setBase64Str(str){
    base64Str = str;
    base64Count = 0;
}
function readBase64(){    
    if (!base64Str) return END_OF_INPUT;
    if (base64Count >= base64Str.length) return END_OF_INPUT;
    var c = base64Str.charCodeAt(base64Count) & 0xff;
    base64Count++;
    return c;
}
function encodeBase64(str){
    setBase64Str(str);
    var result = '';
    var inBuffer = new Array(3);
    var lineCount = 0;
    var done = false;
    while (!done && (inBuffer[0] = readBase64()) != END_OF_INPUT){
        inBuffer[1] = readBase64();
        inBuffer[2] = readBase64();
        result += (base64Chars[ inBuffer[0] >> 2 ]);
        if (inBuffer[1] != END_OF_INPUT){
            result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30) | (inBuffer[1] >> 4) ]);
            if (inBuffer[2] != END_OF_INPUT){
                result += (base64Chars [((inBuffer[1] << 2) & 0x3c) | (inBuffer[2] >> 6) ]);
                result += (base64Chars [inBuffer[2] & 0x3F]);
            } else {
                result += (base64Chars [((inBuffer[1] << 2) & 0x3c)]);
                result += ('=');
                done = true;
            }
        } else {
            result += (base64Chars [(( inBuffer[0] << 4 ) & 0x30)]);
            result += ('=');
            result += ('=');
            done = true;
        }
        lineCount += 4;
        //if (lineCount >= 76){
        //    result += ('\n');
        //    lineCount = 0;
        //}
    }
    return result;
}

function verifica_cookie() {
	//Verifico il dominio attuale
	var dominio = document.domain; 						//Dominio dell'applicazione
	var url = document.URL								//Url della pagina in cui mi trovo
	var campagna = gup('cmp');							//Parametro cmp dell'Url ()se presente
	var referrer = document.referrer;					//Referrer

	var important_referrers = new Hash();
	important_referrers.set('rails2008','id_link=947a4e34a6cfb19dbc91f9b81828e9bb');
	//important_referrers.set('rails2007','id=kasdkaskdkasdkksdkasdkasd');
	//important_referrers.set('railseurope2007','id=kasdkaskdkasdkksdkasdkasd');
	
	if (referrer != null && referrer != "" && referrer.indexOf('oreilly') != -1){
		important_referrers.each(function(element){
			if (referrer.indexOf(element.key) != -1){
				$('whodoes').href = $('whodoes').href + "?" + element.value;
				$('whodoes_2').href = $('whodoes_2').href + "?" + element.value;
				$('whodoes_3').href = $('whodoes_3').href + "?" + element.value;
			}
		});
	}
	
}

//Al cariacmento della pagina richiama il js
window.onload=verifica_cookie;