var calendarToday;
var calendarThisMonth;
var weekend = [0,6];
var weekendColor = "#C0D0DF";
var fontface = "Verdana";
var fontsize = 2;

var gNow = new Date();
var ggWinCal;
isNav = (navigator.appName.indexOf("Netscape") != -1) ? true : false;
isIE = (navigator.appName.indexOf("Microsoft") != -1) ? true : false;

Calendar.Months = ["Janeiro", "Fevereiro", "Março", "Abril", "Maio", "Junho", "Julho", "Agosto", "Setembro", "Outubro", "Novembro", "Dezembro"];

// Non-Leap year Month days..
Calendar.DOMonth = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
// Leap year Month days..
Calendar.lDOMonth = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];

function Calendar(p_item, p_WinCal, p_month, p_year, p_format) {
    if ((p_month == null) && (p_year == null))	return;
	
    if (p_month == null) {
        this.gMonthName = null;
        this.gMonth = null;
        this.gYearly = true;
    } else {
        this.gMonthName = Calendar.get_month(p_month);
        this.gMonth = new Number(p_month);
        this.gYearly = false;
    }

    this.gYear = p_year;
    this.gFormat = p_format;
    this.gReturnItem = p_item;
}

Calendar.get_month = Calendar_get_month;
Calendar.get_daysofmonth = Calendar_get_daysofmonth;
Calendar.calc_month_year = Calendar_calc_month_year;
Calendar.print = Calendar_print;

function Calendar_get_month(monthNo) {
    return Calendar.Months[monthNo];
}

function Calendar_get_daysofmonth(monthNo, p_year) {
    /*
	Check for leap year ..
	1.Years evenly divisible by four are normally leap years, except for... 
	2.Years also evenly divisible by 100 are not leap years, except for... 
	3.Years also evenly divisible by 400 are leap years. 
     */
    if ((p_year % 4) == 0) {
        if ((p_year % 100) == 0 && (p_year % 400) != 0)
            return Calendar.DOMonth[monthNo];
	
        return Calendar.lDOMonth[monthNo];
    } else
        return Calendar.DOMonth[monthNo];
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
    /*
	Will return an 1-D array with 1st element being the calculated month 
	and second being the calculated year 
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
     */
    var ret_arr = new Array();
	
    if (incr == -1) {
        // B A C K W A R D
        if (p_Month == 0) {
            ret_arr[0] = 11;
            ret_arr[1] = parseInt(p_Year) - 1;
        }
        else {
            ret_arr[0] = parseInt(p_Month) - 1;
            ret_arr[1] = parseInt(p_Year);
        }
    } else if (incr == 1) {
        // F O R W A R D
        if (p_Month == 11) {
            ret_arr[0] = 0;
            ret_arr[1] = parseInt(p_Year) + 1;
        }
        else {
            ret_arr[0] = parseInt(p_Month) + 1;
            ret_arr[1] = parseInt(p_Year);
        }
    }
	
    return ret_arr;
}

function Calendar_print() {
    ggWinCal.print();
}

function Calendar_calc_month_year(p_Month, p_Year, incr) {
    /*
	Will return an 1-D array with 1st element being the calculated month 
	and second being the calculated year 
	after applying the month increment/decrement as specified by 'incr' parameter.
	'incr' will normally have 1/-1 to navigate thru the months.
     */
    var ret_arr = new Array();
	
    if (incr == -1) {
        // B A C K W A R D
        if (p_Month == 0) {
            ret_arr[0] = 11;
            ret_arr[1] = parseInt(p_Year) - 1;
        }
        else {
            ret_arr[0] = parseInt(p_Month) - 1;
            ret_arr[1] = parseInt(p_Year);
        }
    } else if (incr == 1) {
        // F O R W A R D
        if (p_Month == 11) {
            ret_arr[0] = 0;
            ret_arr[1] = parseInt(p_Year) + 1;
        }
        else {
            ret_arr[0] = parseInt(p_Month) + 1;
            ret_arr[1] = parseInt(p_Year);
        }
    }
	
    return ret_arr;
}


Calendar.prototype.getMonthlyCalendarCode = function() {
    var vCode = "";
    var vHeader_Code = "";
    var vData_Code = "";
	
    // Begin Table Drawing code here..
    vCode = vCode + "<TABLE width=\"100%\" class=\"calendarTableDias\ id=\"calendarTableDiasId\">";
	
    vHeader_Code = this.cal_header();
    vData_Code = this.cal_data();
    vCode = vCode + vHeader_Code + vData_Code;
	
    vCode = vCode + "</TABLE>";
	
    return vCode;
}

Calendar.prototype.show = function() {
    var vCode = "";
    var strCal = "";


    // Setup the page...

    strCal +=  "<div class=\"calendarTitulo\">";
    strCal +=  this.gMonthName + " " + this.gYear;
    strCal +=  "</div>";

    // Show navigation buttons
    var prevMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, -1);
    var prevMM = prevMMYYYY[0];
    var prevYYYY = prevMMYYYY[1];

    var nextMMYYYY = Calendar.calc_month_year(this.gMonth, this.gYear, 1);
    var nextMM = nextMMYYYY[0];
    var nextYYYY = nextMMYYYY[1];

    // Get the complete calendar code for the month..
    vCode = this.getMonthlyCalendarCode();
    strCal +=  vCode;

    strCal += "<TABLE WIDTH='100%' class=\"calendarTableBtns\" > ";
    strCal += "<TR><TD>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
    strCal +=  "<A style=\"	cursor : pointer; \" onclick=\"" +
    "javascript:Build(" +
    "'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)-1) + "', '" + this.gFormat + "'" +
    ");" +
    "\">[<]<\/A>";
    strCal += "</TD><TD style=\"color:#333333;\">&nbsp;Ano</TD><TD ALIGN=center>";
    strCal +=  "<A style=\"	cursor : pointer; \" onclick=\"" +
    "javascript:Build(" +
    "'" + this.gReturnItem + "', '" + this.gMonth + "', '" + (parseInt(this.gYear)+1) + "', '" + this.gFormat + "'" +
    ");" +
    "\">[>]<\/A>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;";
    strCal +=  "&nbsp;&nbsp;<A style=\"	cursor : pointer; \" onclick=\"" +
    "javascript:Build(" +
    "'" + this.gReturnItem + "', '" + prevMM + "', '" + prevYYYY + "', '" + this.gFormat + "'" +
    ");" +
    "\">[<]<\/A>";
    strCal += "</TD><TD style=\"color:#333333;\">Mês</TD>";
    strCal +=  "<TD>";
    strCal +=  "<A style=\"	cursor : pointer; \" onclick=\"" +
    "javascript:Build(" +
    "'" + this.gReturnItem + "', '" + nextMM + "', '" + nextYYYY + "', '" + this.gFormat + "'" +
    ");" +
    "\">[>]<\/A>";
    strCal += "</TD><TD ALIGN=center>";
    /*>>>>>>>>---------------------------*/
    strCal += "</TD></TR></TABLE>";


    strCal += '<div  onclick=\"javascript:divHideAnimation(\'calendarDiv\');\" style=\" cursor:pointer; align : center ; background : #FFFFFF ;	border:1px solid #999999;  right : 2px; top: 2px; width: 13px; height: 13px; position : absolute; font-family:Verdana, Arial, Helvetica, sans-serif; font-size : 9px; \">';
    strCal += 'X';
    strCal += '</div>';

    this.wwrite(strCal);

}

Calendar.prototype.wwrite = function(wtext) {
    document.getElementById("calendarDiv").innerHTML = wtext;
}

Calendar.prototype.cal_header = function() {
    var vCode = "";
	
    vCode = vCode + "<TR>";
    vCode = vCode + "<TD WIDTH='15%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Dom</TD>";
    vCode = vCode + "<TD WIDTH='14%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Seg</TD>";
    vCode = vCode + "<TD WIDTH='14%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Ter</TD>";
    vCode = vCode + "<TD WIDTH='14%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Qua</TD>";
    vCode = vCode + "<TD WIDTH='14%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Qui</TD>";
    vCode = vCode + "<TD WIDTH='14%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Sex</TD>";
    vCode = vCode + "<TD WIDTH='15%' style=\"background : #e8e8e8;\" class=\"calendarHeaderTd\">Sab</TD>";
    vCode = vCode + "</TR>";
	
    return vCode;
}

Calendar.prototype.cal_data = function() {
    var vDate = new Date();
    vDate.setDate(1);
    vDate.setMonth(this.gMonth);
    vDate.setFullYear(this.gYear);

    var vFirstDay=vDate.getDay();
    var vDay=1;
    var vLastDay=Calendar.get_daysofmonth(this.gMonth, this.gYear);
    var vOnLastDay=0;
    var vCode = "";

    /*
	Get day for the 1st of the requested month/year..
	Place as many blank cells before the 1st day of the month as necessary. 
     */

    vCode = vCode + "<TR>";
    for (i=0; i<vFirstDay; i++) {
        vCode = vCode + "<TD "+ this.write_weekend_string_nolink(i) + "></TD>";
    }

    // Write rest of the 1st week

    for (j=vFirstDay; j<7; j++) {
        vCode = vCode + "<TD " + this.write_weekend_string(j) +
        "onClick=\"document." + this.gReturnItem + ".value='" +
        this.format_data(vDay) + "';" +
        "document." + this.gReturnItem + ".style.color = 'black';" +
        "divHideAnimation(\'calendarDiv\');\">" +
        this.format_day(vDay) +
        "</TD>";
        vDay=vDay + 1;
    }
    vCode = vCode + "</TR>";

    // Write the rest of the weeks
    for (k=2; k<7; k++) {
        vCode = vCode + "<TR>";

        for (j=0; j<7; j++) {
            vCode = vCode + "<TD  " + this.write_weekend_string(j) +
            "onClick=\"document." + this.gReturnItem + ".value='" +
            this.format_data(vDay) + "';" +
            "document." + this.gReturnItem + ".style.color = 'black';" +
            "divHideAnimation(\'calendarDiv\');\">" +
            this.format_day(vDay) +
            "</TD>";
            vDay=vDay + 1;

            if (vDay > vLastDay) {
                vOnLastDay = 1;
                break;
            }
        }

        if (j == 6)
            vCode = vCode + "</TR>";
        if (vOnLastDay == 1)
            break;
    }
	
    // Fill up the rest of last week with proper blanks, so that we get proper square blocks
    for (m=1; m<(7-j); m++) {
        if (this.gYearly)
            vCode = vCode + "<TD  " + this.write_weekend_string_nolink(j+m) +
            "></TD>";
        else
            vCode = vCode + "<TD ' " + this.write_weekend_string_nolink(j+m) +
            ">" + m + "</TD>";
    }
	
    return vCode;
}

Calendar.prototype.format_day = function(vday) {
    var vNowDay = gNow.getDate();
    var vNowMonth = gNow.getMonth();
    var vNowYear = gNow.getFullYear();
	
    if(vday < 10) {
        return (vday + '&nbsp;');
    } else {
        return (vday);
    }
}


Calendar.prototype.write_weekend_string_nolink = function(vday) {
	
    return (" onload=\"calendarTdLoadNoLink(this);\" ");

}



Calendar.prototype.write_weekend_string = function(vday) {
    var i;

    // Return special formatting for the weekend day.
    for (i=0; i<weekend.length; i++) {
        if (vday == weekend[i]) {
            return (" onload=\"calendarTdLoadWeekend(this);\" onmousemove=\"calendarTdMouseOver(this);\"  onmouseout=\"calendarTdMouseOut(this);\"");
        }
    }
    return (" onload=\"calendarTdLoad(this);\"  onmousemove=\"calendarTdMouseOver(this);\" onmouseout=\"calendarTdMouseOut(this);\" ");
	

}

Calendar.prototype.format_data = function(p_day) {
    var vData;
    var vMonth = 1 + this.gMonth;
    vMonth = (vMonth.toString().length < 2) ? "0" + vMonth : vMonth;
    var vMon = Calendar.get_month(this.gMonth).substr(0,3).toUpperCase();
    var vFMon = Calendar.get_month(this.gMonth).toUpperCase();
    var vY4 = new String(this.gYear);
    var vY2 = new String(this.gYear.substr(2,2));
    var vDD = (p_day.toString().length < 2) ? "0" + p_day : p_day;

    switch (this.gFormat) {
        case "MM\/DD\/YYYY" :
            vData = vMonth + "\/" + vDD + "\/" + vY4;
            break;
        case "MM\/DD\/YY" :
            vData = vMonth + "\/" + vDD + "\/" + vY2;
            break;
        case "MM-DD-YYYY" :
            vData = vMonth + "-" + vDD + "-" + vY4;
            break;
        case "MM-DD-YY" :
            vData = vMonth + "-" + vDD + "-" + vY2;
            break;

        case "DD\/MON\/YYYY" :
            vData = vDD + "\/" + vMon + "\/" + vY4;
            break;
        case "DD\/MON\/YY" :
            vData = vDD + "\/" + vMon + "\/" + vY2;
            break;
        case "DD-MON-YYYY" :
            vData = vDD + "-" + vMon + "-" + vY4;
            break;
        case "DD-MON-YY" :
            vData = vDD + "-" + vMon + "-" + vY2;
            break;

        case "DD\/MONTH\/YYYY" :
            vData = vDD + "\/" + vFMon + "\/" + vY4;
            break;
        case "DD\/MONTH\/YY" :
            vData = vDD + "\/" + vFMon + "\/" + vY2;
            break;
        case "DD-MONTH-YYYY" :
            vData = vDD + "-" + vFMon + "-" + vY4;
            break;
        case "DD-MONTH-YY" :
            vData = vDD + "-" + vFMon + "-" + vY2;
            break;

        case "DD\/MM\/YYYY" :
            vData = vDD + "\/" + vMonth + "\/" + vY4;
            break;
        case "DD\/MM\/YY" :
            vData = vDD + "\/" + vMonth + "\/" + vY2;
            break;
        case "DD-MM-YYYY" :
            vData = vDD + "-" + vMonth + "-" + vY4;
            break;
        case "DD-MM-YY" :
            vData = vDD + "-" + vMonth + "-" + vY2;
            break;

        default :
            vData = vMonth + "\/" + vDD + "\/" + vY4;
    }

    return vData;
}

function Build(p_item, p_month, p_year, p_format) {
    var p_WinCal = ggWinCal;
    calendarThisMonth = ((p_month == new Date().getMonth()) && ((new Date().getYear()+1900) == p_year));

    gCal = new Calendar(p_item, p_WinCal, p_month, p_year, p_format);


    // Choose appropriate show function
    if (gCal.gYearly)	gCal.showY();
    else	gCal.show();


    var calNodes = document.getElementById("calendarDiv").childNodes;
    for(i =0; i<calNodes.length; i++) {
        if(calNodes[i].tagName.toUpperCase() == 'TABLE') {
            var tdNodes = calNodes[i].childNodes[0].childNodes;
            for(j=1; j< tdNodes.length; j++) {
                for(k=0; k< tdNodes[j].childNodes.length; k++) {
                    tdNodes[j].childNodes[k].onload();
                }
            }
            break;
        }
    }

}

function show_calendar(item , botao) {

    p_item = eForm.name + "." + item;
    p_month = new String(gNow.getMonth());
    p_year = new String(gNow.getFullYear().toString());
    p_format = "DD/MM/YYYY";
    calendarToday = new Date().getDate();

    var testeItem = eval('document.' + eForm.name + "." + item);
	 
    if(testeItem.disabled == true) {
        alert("Não é possível exibir o calendario para um campo desabilitado!");
        return;
    }
	  
    var el = botao;
	 
    var top = 0;
    var left = 0;
    //var left = el.offsetWidth + 3;

    while(el) {
        top += el.offsetTop ;
        left += el.offsetLeft;
        el = el.offsetParent;
    }

    document.getElementById("calendarDiv").style.top = (top + 0) + "px";
    document.getElementById("calendarDiv").style.left = (left + 18) +"px";

    divShowAnimation("calendarDiv");
	

    Build(p_item, p_month, p_year, p_format);
}

function divShowAnimation(elem) {
    document.getElementById(elem).style.opacity = 0;
    document.getElementById(elem).style.display = '';
    var j = 0;
    for(i = 10; i >= 0; i--) {
        setTimeout('document.getElementById(\'' + elem + '\').style.opacity = \'' + ((10-i)/10) + '\'', j );
        j+= (20 + (30/i));
    }
}


function divHideAnimation(elem) {
    document.getElementById(elem).style.opacity = 1;
    var j = 0;
    for(i = 1; i <= 10; i++) {
        setTimeout('document.getElementById(\'' + elem + '\').style.opacity = \'' + ((10-i)/10) + '\'', j );
        j+= (15 + (10/i));
    }
    setTimeout('document.getElementById(\'' + elem + '\').style.display = \'none\'', j );

}


function calendarTdMouseOut(comp) {
    if(!verifyToday(comp)) {
        comp.style.background = '#FFFFFF';
    }
} 

function calendarTdMouseOver(comp) {
    comp.style.cursor = 'pointer';
    comp.style.background = '#D1DDFA';
} 


function verifyToday(comp) {
    return ((calendarThisMonth) && (comp.innerHTML.replace(/&nbsp;/, "") == new Date().getDate()));

} 


function calendarTdLoad(comp) {
    verifyToday(comp);
    comp.style.color = "#000000";
    if(verifyToday(comp)) {
        comp.style.fontWeight = 'bold';
        comp.style.background = '#D1DDFA';
    }
} 


function calendarTdLoadWeekend(comp) {
    verifyToday(comp);
    comp.style.color = "#ff0000";
    if(verifyToday(comp)) {
        comp.style.fontWeight = 'bold';
        comp.style.background = '#D1DDFA';
    }
} 


function calendarTdLoadNoLink(comp) {
    comp.style.color = "#777777";
}




/*
Yearly Calendar Code Starts here
 */
function show_yearly_calendar(p_item, p_year, p_format) {
    // Load the defaults..
    if (p_year == null || p_year == "")
        p_year = new String(gNow.getFullYear().toString());
    if (p_format == null || p_format == "")
        p_format = "DD/MM/YYYY";

    var vWinCal = window.open("", "Calendar", "scrollbars=yes");
    vWinCal.opener = self;
    ggWinCal = vWinCal;

    Build(p_item, null, p_year, p_format);
}

document.onmousemove = mouseMove;
document.onmouseup   = mouseUp;

function mouseCoords(ev){
    if ( navigator.appName != "Microsoft Internet Explorer" ) {
        if(ev.pageX || ev.pageY){
            return {
                x:ev.pageX,
                y:ev.pageY
            };
        }
        return {
            x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
            y:ev.clientY + document.body.scrollTop  - document.body.clientTop
        };
    }else{
        if(ev.pageX || ev.pageY){
            return {
                x:ev.pageX,
                y:ev.pageY
            };
        }
        /*return {
            x:ev.clientX + document.body.scrollLeft - document.body.clientLeft,
            y:ev.clientY + document.body.scrollTop  - document.body.clientTop
        };*/

    }
}


var dragObject  = null;
var mouseOffset = null;

function getMouseOffset(target, ev){
    ev = ev || window.event;

    var docPos    = getPosition(target);
    var mousePos  = mouseCoords(ev);
    return {
        x:mousePos.x - docPos.x,
        y:mousePos.y - docPos.y
    };
}

function getPosition(e){
    var left = 0;
    var top  = 0;

    while (e.offsetParent){
        left += e.offsetLeft;
        top  += e.offsetTop;
        e     = e.offsetParent;
    }

    left += e.offsetLeft;
    top  += e.offsetTop;

    return {
        x:left,
        y:top
    };
}

function mouseMove(ev){
    ev           = ev || window.event;
    var mousePos = mouseCoords(ev);

    if(dragObject){
        dragObject.style.position = 'absolute';
        dragObject.style.top      = mousePos.y - mouseOffset.y;
        dragObject.style.left     = mousePos.x - mouseOffset.x;

        return false;
    }
}
function mouseUp(){
    dragObject = null;
}

function makeDraggable(item){
    if(!item) return;
    item.onmousedown = function(ev){
        dragObject  = this;
        mouseOffset = getMouseOffset(this, ev);
        return false;
    }
}