///<reference name = "MicrosoftAjax.js"/>

//Type.registerNamespace("Guru.Util");


var Guru = {};
Guru.Util  = {};
Guru.Util.popUps = new Array();

Guru.Util.DocumentOnClickCallBack = new Array();

Guru.Util.HelpPopUp = function(element, handle) {
    this._element = element;
    this._handle = handle;
   // Type.registerClass("Guru.Util.HelpPopUp");
}

Guru.Util.setDocumentOnClickCallBack = function(name) {
    Guru.Util.DocumentOnClickCallBack.push(name);
}

Guru.Util.RegisterPopUps = function(elementId, handleId) {
    if (document.getElementById(elementId) && document.getElementById(handleId)) {
        var popup = new Guru.Util.HelpPopUp(document.getElementById(elementId), document.getElementById(handleId));
        Guru.Util.popUps.push(popup);
    }
}

document.onclick = function(e) {
    e = e || event;
    var target = e.target || e.srcElement;
    do {
        for (k = 0; k < Guru.Util.popUps.length; k++) {
            if (document.getElementById(Guru.Util.popUps[k]._handle.id) == target || document.getElementById(Guru.Util.popUps[k]._element.id)==target) {
                return;
            }
        }
        target = target.parentNode;

    } while (target);

    for (k = 0; k < Guru.Util.popUps.length; k++) {
        document.getElementById(Guru.Util.popUps[k]._element.id).style.display = 'none';
    }

    for (k = 0; k < Guru.Util.DocumentOnClickCallBack.length; k++) {
        var callback = Guru.Util.DocumentOnClickCallBack[k];
        if (typeof (callback) == "function") {
            callback(e);
        }
    }
}


function show(elem) {
    document.getElementById(elem).style.display = '';
}
function hide(elem) {
    document.getElementById(elem).style.display = 'none';
}

function showHide(show, hide) {
    document.getElementById(show).style.display = '';
    document.getElementById(hide).style.display = 'none';
}


function success(elem) {
    show(elem);
    timer1 = setTimeout(function() { hide(elem); }, 2500);
}


function showModal(elem) {
    el = document.getElementById(elem);
    el.style.visibility = (el.style.visibility == "visible") ? "hidden" : "visible";

    window.onkeyup = function(event) {
        if (event.keyCode == 27) {
            closeModal(elem);
        }
    }

}
function closeModal(elem) {
    el = document.getElementById(elem);
    el.style.visibility = (el.style.visibility == "hidden") ? "hidden" : "hidden";
}

function encrypt(str, pwd) {
    if (pwd == null || pwd.length <= 0) {
        alert("Please enter a password with which to encrypt the message.");
        return null;
    }
    var prand = "";
    for (var i = 0; i < pwd.length; i++) {
        prand += pwd.charCodeAt(i).toString();
    }
    var sPos = Math.floor(prand.length / 5);
    var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos * 2) + prand.charAt(sPos * 3) + prand.charAt(sPos * 4) + prand.charAt(sPos * 5));
    var incr = Math.ceil(pwd.length / 2);
    var modu = Math.pow(2, 31) - 1;
    if (mult < 2) {
        alert("Algorithm cannot find a suitable hash. Please choose a different password.");
        return null;
    }
    var salt = Math.round(Math.random() * 1000000000) % 100000000;
    prand += salt;
    while (prand.length > 10) {
        prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString();
    }
    prand = (mult * prand + incr) % modu;
    var enc_chr = "";
    var enc_str = "";
    for (var i = 0; i < str.length; i++) {
        enc_chr = parseInt(str.charCodeAt(i) ^ Math.floor((prand / modu) * 255));
        if (enc_chr < 16) {
            enc_str += "0" + enc_chr.toString(16);
        } else enc_str += enc_chr.toString(16);
        prand = (mult * prand + incr) % modu;
    }
    salt = salt.toString(16);
    while (salt.length < 8) salt = "0" + salt;
    enc_str += salt;

    return enc_str;
}

function decrypt(str, pwd) {
    if (str == null || str.length < 8) {
        alert("A salt value could not be extracted from the encrypted message because it's length is too short. The message cannot be decrypted.");
        return;
    }
    if (pwd == null || pwd.length <= 0) {
        alert("Please enter a password with which to decrypt the message.");
        return;
    }
    var prand = "";
    for (var i = 0; i < pwd.length; i++) {
        prand += pwd.charCodeAt(i).toString();
    }
    var sPos = Math.floor(prand.length / 5);
    var mult = parseInt(prand.charAt(sPos) + prand.charAt(sPos * 2) + prand.charAt(sPos * 3) + prand.charAt(sPos * 4) + prand.charAt(sPos * 5));
    var incr = Math.round(pwd.length / 2);
    var modu = Math.pow(2, 31) - 1;
    var salt = parseInt(str.substring(str.length - 8, str.length), 16);
    str = str.substring(0, str.length - 8);
    prand += salt;
    while (prand.length > 10) {
        prand = (parseInt(prand.substring(0, 10)) + parseInt(prand.substring(10, prand.length))).toString();
    }
    prand = (mult * prand + incr) % modu;
    var enc_chr = "";
    var enc_str = "";
    for (var i = 0; i < str.length; i += 2) {
        enc_chr = parseInt(parseInt(str.substring(i, i + 2), 16) ^ Math.floor((prand / modu) * 255));
        enc_str += String.fromCharCode(enc_chr);
        prand = (mult * prand + incr) % modu;
    }

    return enc_str;
}