var selfUrl = '/de/tools/customer_registration/';

var month_names = new Array( "Januar",
							 "Februar",
							 "März",
							 "April",
							 "Mai",
							 "Juni",
							 "Juli",
							 "August",
							 "September",
							 "Oktober",
							 "November",
							 "Dezember");

var day_names = new Array( "So",
						   "Mo",
						   "Di",
						   "Mi",
						   "Do",
						   "Fr",
						   "Sa");


var day;
var month;
var year;
var hour;
var minute;
var second;
var clock_set = 0;

/**
 * Opens calendar window.
 *
 * @param   string      doa name
 * @param   string      form name
 * @param   string      field name
 */
function openCalendar ( form, field) {

    var params = 'form=' + form + '&field=' + field;

    window.open (selfUrl + "calendar.php?" + params, "calendar", "width=400,height=180,status=no");
    dateFieldDay   = eval ("document." + form + "." + field + '_d');
    dateFieldMonth = eval ("document." + form + "." + field + '_m');
    dateFieldYear  = eval ("document." + form + "." + field + '_y');

	dateType = 'date';

}




/**
 * Formats number to two digits.
 *
 * @param   int number to format.
 * @param   string type of number
 */
function formatNum2(i, valtype) {
    f = (i < 10 ? '0' : '') + i;
    if (valtype && valtype != '') {
        switch(valtype) {
            case 'month':
                f = (f > 12 ? 12 : f);
                break;

            case 'day':
                f = (f > 31 ? 31 : f);
                break;

            case 'hour':
                f = (f > 24 ? 24 : f);
                break;

            default:
            case 'second':
            case 'minute':
                f = (f > 59 ? 59 : f);
                break;
        }
    }

    return f;
}

/**
 * Formats number to two digits.
 *
 * @param   int number to format.
 * @param   int default value
 * @param   string type of number
 */
function formatNum2d(i, default_v, valtype) {
    i = parseInt(i, 10);
    if (isNaN(i)) return default_v;
    return formatNum2(i, valtype)
}

/**
 * Formats number to four digits.
 *
 * @param   int number to format.
 */
function formatNum4(i) {
    i = parseInt(i, 10)
    return (i < 1000 ? i < 100 ? i < 10 ? '000' : '00' : '0' : '') + i;
}




/**
 * Initializes calendar window.
 */
function initCalendar() {

    if (!year && !month && !day) {
        /* Called for first time */

	
        if (window.opener.dateFieldDay.value) {


            day         = parseInt( window.opener.dateFieldDay.value);
            month       = parseInt( window.opener.dateFieldMonth.value) - 1;
            year        = parseInt( window.opener.dateFieldYear.value);

            if ( year <= 1900) {

            	year = 1900;
            }

        }
	

        if (isNaN(year) || isNaN(month) || isNaN(day) || day == 0) {
            dt      = new Date();
            year    = dt.getFullYear();
            month   = dt.getMonth();
            day     = dt.getDate();
        }

    } else {
        /* Moving in calendar */
        if (month > 11) {
            month = 0;
            year++;
        }
        if (month < 0) {
            month = 11;
            year--;
        }
    }

    if (document.getElementById) {
        cnt = document.getElementById("calendar_data");
    } else if (document.all) {
        cnt = document.all["calendar_data"];
    }

    cnt.innerHTML = "";

    str = ""

    //heading table
    str += '<table class="calendar"><tr><th width="50%">';
    str += '<form method="NONE" onsubmit="return 0">';
    str += '<a href="javascript:month--; initCalendar();">&laquo;</a> ';
    str += '<select id="select_month" name="monthsel" onchange="month = parseInt(document.getElementById(\'select_month\').value); initCalendar();">';
    for (i =0; i < 12; i++) {
        if (i == month) selected = ' selected="selected"';
        else selected = '';
        str += '<option value="' + i + '" ' + selected + '>' + month_names[i] + '</option>';
    }
    str += '</select>';
    str += ' <a href="javascript:month++; initCalendar();">&raquo;</a>';
    str += '</form>';
    str += '</th><th width="50%">';
    str += '<form method="NONE" onsubmit="return 0">';
    str += '<a href="javascript:year--; initCalendar();">&laquo;</a> ';
    str += '<select id="select_year" name="yearsel" onchange="year = parseInt(document.getElementById(\'select_year\').value); initCalendar();">';
    for (i = year - 25; i < year + 25; i++) {
        if (i == year) selected = ' selected="selected"';
        else selected = '';
        str += '<option value="' + i + '" ' + selected + '>' + i + '</option>';
    }
    str += '</select>';
    str += ' <a href="javascript:year++; initCalendar();">&raquo;</a>';
    str += '</form>';
    str += '</th></tr></table>';

    str += '<table class="calendar"><tr>';
    for (i = 0; i < 7; i++) {
        str += "<th>" + day_names[i] + "</th>";
    }
    str += "</tr>";

    var firstDay = new Date(year, month, 1).getDay();
    var lastDay = new Date(year, month + 1, 0).getDate();

    str += "<tr>";

    dayInWeek = 0;
    for (i = 0; i < firstDay; i++) {
        str += "<td>&nbsp;</td>";
        dayInWeek++;
    }
    for (i = 1; i <= lastDay; i++) {
        if (dayInWeek == 7) {
            str += "</tr><tr>";
            dayInWeek = 0;
        }

        dispmonth = 1 + month;

        if (window.opener.dateType == 'datetime' || window.opener.dateType == 'date') {
            actVal = "" + formatNum4(year) + "-" + formatNum2(dispmonth, 'month') + "-" + formatNum2(i, 'day');
        } else {
            actVal = "" + formatNum4(year) + formatNum2(dispmonth, 'month') + formatNum2(i, 'day');
        }
        if (i == day) {
            style = ' class="selected"';
            current_date = actVal;
        } else {
            style = '';
        }
        //str += "<td" + style + "><a href=\"javascript:returnDate('" + actVal + "');\">" + i + "</a></td>"
        str += "<td" + style + ">";

        if( dayInWeek != 0 && dayInWeek != 6) {

			str += "<a href=\"javascript:returnDate('" + actVal + "');\">";
		}

		str += i;

        if( dayInWeek != 0 && dayInWeek != 6) {

        	str += "</a>";
        }

		str += "</td>";



		dayInWeek++;
    }
    for (i = dayInWeek; i < 7; i++) {
        str += "<td>&nbsp;</td>";
    }

    str += "</tr></table>";

    cnt.innerHTML = str;

    // Should we handle time also?
    if (window.opener.dateType != 'date' && !clock_set) {

        if (document.getElementById) {
            cnt = document.getElementById("clock_data");
        } else if (document.all) {
            cnt = document.all["clock_data"];
        }

        str = '';
        init_hour = hour;
        init_minute = minute;
        init_second = second;
        str += '<form method="NONE" class="clock" onsubmit="returnDate(\'' + current_date + '\')">';
        str += '<input id="hour"    type="text" size="2" maxlength="2" onblur="this.value=formatNum2d(this.value, init_hour, \'hour\'); init_hour = this.value;" value="' + formatNum2(hour, 'hour') + '" />:';
        str += '<input id="minute"  type="text" size="2" maxlength="2" onblur="this.value=formatNum2d(this.value, init_minute, \'minute\'); init_minute = this.value;" value="' + formatNum2(minute, 'minute') + '" />:';
        str += '<input id="second"  type="text" size="2" maxlength="2" onblur="this.value=formatNum2d(this.value, init_second, \'second\'); init_second = this.value;" value="' + formatNum2(second, 'second') + '" />';
        str += '<br />';
        str += '<input type="submit" value="' + submit_text + '"/>';
        str += '</form>';

        cnt.innerHTML = str;
        clock_set = 1;
    }

}

/**
 * Returns date from calendar.
 *
 * @param   string     date text
 */
function returnDate(d) {
    txt = d;
    if (window.opener.dateType != 'date') {
        // need to get time
        h = parseInt(document.getElementById('hour').value,10);
        m = parseInt(document.getElementById('minute').value,10);
        s = parseInt(document.getElementById('second').value,10);
        if (window.opener.dateType == 'datetime') {
            txt += ' ' + formatNum2(h, 'hour') + ':' + formatNum2(m, 'minute') + ':' + formatNum2(s, 'second');
        } else {
            // timestamp
            txt += formatNum2(h, 'hour') + formatNum2(m, 'minute') + formatNum2(s, 'second');
        }
    }

	date = d.split("-");
	day         = date[2];
	month       = date[1];
	year        = date[0];

    window.opener.dateFieldDay.value   = day;
    window.opener.dateFieldMonth.value = month;
    window.opener.dateFieldYear.value  = year;

    window.close();
}