/*!
* Clean Calendar
* Copyright 2007-2009 Marc Grabanski (m@marcgrabanski.com) http://marcgrabanski.com
* Project Page: http://marcgrabanski.com/article/clean-calendar
* Under the MIT License */


function mailpage() {
    mail_str = "mailto:?subject=Check out the " + document.title;
    mail_str += "&body=I thought you might be interested in the " + document.title;
    mail_str += ". You can view it at, " + location.href;
    location.href = mail_str;
}

function largefontSize(id) {

    var obj=document.getElementById(id);
    
    var content1 = document.getElementById('content');
    var contentHeader = document.getElementById('contentHeader');
    
    if (obj.className == 'max') {
        if (content1 != null)
            content1.style.fontSize = "large";
        if (contentHeader != null)
            contentHeader.style.fontSize = "large";
        obj.className = 'min';
    }
    else {
        if (content1 != null)
            content1.style.fontSize = "11px";
        if (contentHeader != null)
            contentHeader.style.fontSize = "11px";
        obj.className = 'max';
    }
}





var popUpCal = {
    selectedMonth: new Date().getMonth(),
    // 0-11
    selectedYear: new Date().getFullYear(),
    // 4-digit year
    selectedDay: new Date().getDate(),
    calendarId: 'calendarDiv',
    inputClass: 'calendarSelectDate',

    init: function() {
        var x = getElementsByClass(popUpCal.inputClass, document, 'input');
        var y = document.getElementById(popUpCal.calendarId);
        // set the calendar position based on the input position
        for (var i = 0; i < x.length; i++) {
            x[i].onfocus = function() {
                popUpCal.selectedMonth = new Date().getMonth();
                setPos(this, y);
                // setPos(targetObj,moveObj)
                y.style.display = 'block';
                popUpCal.drawCalendar(this);
                popUpCal.setupLinks(this);
            }
        }
    },

    drawCalendar: function(inputObj) {

        var html = '';
        html = '<a id="closeCalender">Close Calendar</a>';
        html += '<table cellpadding="0" cellspacing="0" id="linksTable"><tr>';
        html += '	<td><a id="prevMonth"><< Prev</a></td>';
        html += '	<td><a id="nextMonth">Next >></a></td>';
        html += '</tr></table>';
        html += '<table id="calendar" cellpadding="0" cellspacing="0"><tr>';
        html += '<th colspan="7" class="calendarHeader">' + getMonthName(popUpCal.selectedMonth) + ' ' + popUpCal.selectedYear + '</th>';
        html += '</tr><tr class="weekDaysTitleRow">';
        var weekDays = new Array('S', 'M', 'T', 'W', 'T', 'F', 'S');
        for (var j = 0; j < weekDays.length; j++) {
            html += '<td>' + weekDays[j] + '</td>';
        }

        var daysInMonth = getDaysInMonth(popUpCal.selectedYear, popUpCal.selectedMonth);
        var startDay = getFirstDayofMonth(popUpCal.selectedYear, popUpCal.selectedMonth);
        var numRows = 0;
        var printDate = 1;
        if (startDay != 7) {
            numRows = Math.ceil(((startDay + 1) + (daysInMonth)) / 7);
            // calculate the number of rows to generate
        }

        // calculate number of days before calendar starts
        if (startDay != 7) {
            var noPrintDays = startDay + 1;
        } else {
            var noPrintDays = 0;
            // if sunday print right away	
        }
        var today = new Date().getDate();
        var thisMonth = new Date().getMonth();
        var thisYear = new Date().getFullYear();
        // create calendar rows
        for (var e = 0; e < numRows; e++) {
            html += '<tr class="weekDaysRow">';
            // create calendar days
            for (var f = 0; f < 7; f++) {
                if ((printDate == today)
        && (popUpCal.selectedYear == thisYear)
        && (popUpCal.selectedMonth == thisMonth)
        && (noPrintDays == 0)) {
                    html += '<td id="today" class="weekDaysCell">';
                } else {
                    html += '<td class="weekDaysCell">';
                }
                if (noPrintDays == 0) {
                    if (printDate <= daysInMonth) {
                        html += '<a>' + printDate + '</a>';
                    }
                    printDate++;
                }
                html += '</td>';
                if (noPrintDays > 0) noPrintDays--;
            }
            html += '</tr>';
        }
        html += '</table>';
        html += '<!--[if lte IE 6.5]><iframe src="javascript:false;" id="calendar_cover"></iframe><![endif]-->';

        // add calendar to element to calendar Div
        var calendarDiv = document.getElementById(popUpCal.calendarId);
        calendarDiv.innerHTML = html;

        // close button link
        document.getElementById('closeCalender').onclick = function() {
            calendarDiv.style.display = 'none';
        }
        // setup next and previous links
        document.getElementById('prevMonth').onclick = function() {
            popUpCal.selectedMonth--;
            if (popUpCal.selectedMonth < 0) {
                popUpCal.selectedMonth = 11;
                popUpCal.selectedYear--;
            }
            popUpCal.drawCalendar(inputObj);
            popUpCal.setupLinks(inputObj);
        }
        document.getElementById('nextMonth').onclick = function() {
            popUpCal.selectedMonth++;
            if (popUpCal.selectedMonth > 11) {
                popUpCal.selectedMonth = 0;
                popUpCal.selectedYear++;
            }
            popUpCal.drawCalendar(inputObj);
            popUpCal.setupLinks(inputObj);
        }

    },
    // end drawCalendar function
    setupLinks: function(inputObj) {
        // set up link events on calendar table
        var y = document.getElementById('calendar');
        var x = y.getElementsByTagName('a');
        for (var i = 0; i < x.length; i++) {
            x[i].onmouseover = function() {
                this.parentNode.className = 'weekDaysCellOver';
            }
            x[i].onmouseout = function() {
                this.parentNode.className = 'weekDaysCell';
            }
            x[i].onclick = function() {
                document.getElementById(popUpCal.calendarId).style.display = 'none';
                popUpCal.selectedDay = this.innerHTML;
                inputObj.value = formatDate(popUpCal.selectedDay, popUpCal.selectedMonth, popUpCal.selectedYear);
            }
        }
    }

}
// Add calendar event that has wide browser support
if (typeof window.addEventListener != "undefined")
    window.addEventListener("load", popUpCal.init, false);
else if (typeof window.attachEvent != "undefined")
    window.attachEvent("onload", popUpCal.init);
else {
    if (window.onload != null) {
        var oldOnload = window.onload;
        window.onload = function(e) {
            oldOnload(e);
            popUpCal.init();
        };
    }
    else
        window.onload = popUpCal.init;
}

/* Functions Dealing with Dates */

function formatDate(Day, Month, Year) {
    Month++;
    // adjust javascript month
    if (Month < 10) Month = '0' + Month;
    // add a zero if less than 10
    if (Day < 10) Day = '0' + Day;
    // add a zero if less than 10
    var dateString = Day + '/' + Month  + '/' + Year;
    return dateString;
}

function getMonthName(month) {
    var monthNames = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
    return monthNames[month];
}

function getDayName(day) {
    var dayNames = new Array('Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday')
    return dayNames[day];
}

function getDaysInMonth(year, month) {
    return 32 - new Date(year, month, 32).getDate();
}

function getFirstDayofMonth(year, month) {
    var day;
    day = new Date(year, month, 0).getDay();
    return day;
}

/* Common Scripts */

function getElementsByClass(searchClass, node, tag) {
    var classElements = new Array();
    if (node == null) node = document;
    if (tag == null) tag = '*';
    var els = node.getElementsByTagName(tag);
    var elsLen = els.length;
    var pattern = new RegExp("(^|\s)" + searchClass + "(\s|$)");
    for (i = 0, j = 0; i < elsLen; i++) {
        if (pattern.test(els[i].className)) {
            classElements[j] = els[i];
            j++;
        }
    }
    return classElements;
}

/* Position Functions */

function setPos(targetObj, moveObj) {
    var coors = findPos(targetObj);
    moveObj.style.position = 'absolute';
    moveObj.style.top = coors[1] + 18 + 'px';
    moveObj.style.left = coors[0] + 'px';
}

function findPos(obj) {
    var curleft = curtop = 0;
    if (obj.offsetParent) {
        curleft = obj.offsetLeft
        curtop = obj.offsetTop
        while (obj = obj.offsetParent) {
            curleft += obj.offsetLeft
            curtop += obj.offsetTop
        }
    }
    return [curleft, curtop];
}