selectedDayID = '';
function changeDate(date, dayID) {
    //document.getElementById('hfDate').value = date;
    document.getElementById('txtDate').value = date;
    document.getElementById(dayID).className = 'calSelected';
    if (selectedDayID != dayID && selectedDayID != '' && document.getElementById(selectedDayID) != null) {
        document.getElementById(selectedDayID).style.background = '';
        document.getElementById(selectedDayID).className = '';
    }
    selectedDayID = dayID;
    toggleCal();
}

function toggleCal() {
    if (document.getElementById('calDiv').style.display == 'none') {
        document.getElementById('calDiv').style.display = 'block';
        $get('linkCal').innerHTML = '«';
        document.getElementById('hfShowCal').value = 'show';
    }
    else {
        document.getElementById('calDiv').style.display = 'none';
        $get('linkCal').innerHTML = '»';
        document.getElementById('hfShowCal').value = '';
    }
}

function init() {
    // add error-handling setup
    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
    
    // set initial focus
    if (document.getElementById('txtUsername').value == '')
        document.getElementById('txtUsername').focus();
    else
        document.getElementById('txtPassword').focus();
}

function yahooLogin() {
    initKey();
    document.getElementById('hfCred').value = encryptedString(key, 
        document.getElementById('hfChallenge').value
        + "\\" + base64encode(document.getElementById('txtUsername').value) 
        + "\\" + base64encode(document.getElementById('txtPassword').value));
        
    // mask password for posting
    dummy = '';
    for (i = 0; i < document.getElementById('txtPassword').value.length; i++) {
        dummy += '*';
    }
    document.getElementById('txtPassword').value = dummy;
}

function EndRequestHandler(sender, args) {
    if (args.get_error() != undefined) {
        var errorMessage = args.get_error().message;
        args.set_errorHandled(true);
        
        // check for exceptional exception
        if (errorMessage.indexOf('Sys.WebForms.PageRequestManagerParserErrorException') >= 0)
            $get('lblWarning').innerHTML = 'An error has occurred on your request. Please try again. If the error persists, please contact us.';
        else if (errorMessage.indexOf('Sys.WebForms.PageRequestManagerServerErrorException') >= 0)
            $get('lblWarning').innerHTML = 'An error has occurred on your request. Please try again. If the error persists, please contact us.';
        else if (errorMessage.indexOf('Sys.WebForms.PageRequestManagerTimeoutException') >= 0)
            $get('lblWarning').innerHTML = 'The request has timed out. Please check your Internet connection and try again.';
        else
            $get('lblWarning').innerHTML = errorMessage;
    }
}

function base64encode(str) {
    var base64EncodeChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
    var base64DecodeChars = new Array(
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
    52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
    -1,  0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14,
    15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
    -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
    41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1);
    var out, i, len;
    var c1, c2, c3;

    len = str.length;
    i = 0;
    out = "";
    while (i < len) {
        c1 = str.charCodeAt(i++) & 0xff;
        if(i == len)
        {
            out += base64EncodeChars.charAt(c1 >> 2);
            out += base64EncodeChars.charAt((c1 & 0x3) << 4);
            out += "==";
            break;
        }
        c2 = str.charCodeAt(i++);
        if(i == len)
        {
            out += base64EncodeChars.charAt(c1 >> 2);
            out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
            out += base64EncodeChars.charAt((c2 & 0xF) << 2);
            out += "=";
            break;
        }
        c3 = str.charCodeAt(i++);
        out += base64EncodeChars.charAt(c1 >> 2);
        out += base64EncodeChars.charAt(((c1 & 0x3)<< 4) | ((c2 & 0xF0) >> 4));
        out += base64EncodeChars.charAt(((c2 & 0xF) << 2) | ((c3 & 0xC0) >>6));
        out += base64EncodeChars.charAt(c3 & 0x3F);
    }
    return out;
}