//This code was originated by Tom J. McClure (tom@dagblastit.com | www.dagblastit.com)
//You may use the code license and royalty free unless otherwise directed.
//
//Code enhanced 11.13.2003 by MCS Business Technnologies, Inc. www.mcsgroup.com
//Enhanced to always return 2 digit month and two digit day
//See function setDay()
//
//added variable to control automatic submission Y/N - KER 01/24/2006
 

// how reliable is this test?
isIE = (document.all ? true : false);
isDOM = (document.getElementById ? true : false);

// Initialize arrays.
var months = new Array("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
var daysInMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var displayMonth = new Date().getMonth();
var displayYear = new Date().getFullYear();
var displayDivName;
var displayElement;
var autoSbm;

// get the true offset of anything on NS4, IE4/5 & NS6, even if it's in a table!
function getAbsX(elt) { return (elt.x) ? elt.x : getAbsPos(elt,"Left"); }
function getAbsY(elt) { return (elt.y) ? elt.y : getAbsPos(elt,"Top"); }
function getAbsPos(elt,which) {
 iPos = 0;
 while (elt != null) {
  iPos += elt["offset" + which];
  elt = elt.offsetParent;
 }
 return iPos;
}

function getDivStyle(divname) {
 var style;
 if (isDOM) { style = document.getElementById(divname).style; }
 else { style = isIE ? document.all[divname].style
                     : document.layers[divname]; } // NS4
 return style;
}

function hideElement(divname) {
 getDivStyle(divname).visibility = 'hidden';
}

// annoying detail: IE and NS6 store elt.top and elt.left as strings.
function moveBy(elt,deltaX,deltaY) {
 elt.left = parseInt(elt.left) + deltaX;
 elt.top = parseInt(elt.top) + deltaY;
}

function toggleVisible(divname) {
 divstyle = getDivStyle(divname);
 if (divstyle.visibility == 'visible' || divstyle.visibility == 'show') {
   divstyle.visibility = 'hidden';
 } else {
   fixPosition(divname);
   divstyle.visibility = 'visible';
 }
}

function setPosition(elt,positionername,isPlacedUnder) {
 var positioner;
 if (isIE) {
  positioner = document.all[positionername];
 } else {
  if (isDOM) {
    positioner = document.getElementById(positionername);
  } else {
    // not IE, not DOM (probably NS4)
    // if the positioner is inside a netscape4 layer this will *not* find it.
    // I should write a finder function which will recurse through all layers
    // until it finds the named image...
    positioner = document.images[positionername];
  }
 }
 elt.left = getAbsX(positioner);
 elt.top = getAbsY(positioner) + (isPlacedUnder ? positioner.height : 0);
}

function getDays(month, year) {
	// Test for leap year when February is selected.
	if (1 == month)
		return ((0 == year % 4) && (0 != (year % 100))) || (0 == year % 400) ? 29 : 28;
	else
		return daysInMonth[month];
}

function getToday() {
// Generate today's date.
	this.now = new Date();
	this.year = this.now.getFullYear();
	this.month = this.now.getMonth();
	this.day = this.now.getDate();
}

// Start with a calendar for today.
today = new getToday();

function newCalendar(eltName,attachedElement) {
	if (attachedElement) {
		if (displayDivName && displayDivName != eltName) hideElement(displayDivName);
			displayElement = attachedElement;
	    }
	displayDivName = eltName;
	today = new getToday();
	var parseYear = parseInt(displayYear + '');
	var newCal = new Date(parseYear,displayMonth,1);
	var day = -1;
	var startDayOfWeek = newCal.getDay();
	if ((today.year == newCal.getFullYear()) && (today.month == newCal.getMonth())) {
		day = today.day;
	}
	var intDaysInMonth =
	getDays(newCal.getMonth(), newCal.getFullYear());
	var daysGrid = makeDaysGrid(startDayOfWeek,day,intDaysInMonth,newCal,eltName)
	if (isIE) {
		var elt = document.all[eltName];
		elt.innerHTML = daysGrid;
	} else if (isDOM) {
		var elt = document.getElementById(eltName);
		elt.innerHTML = daysGrid;
	} else {
		var elt = document.layers[eltName].document;
		elt.open();
		elt.write(daysGrid);
		elt.close();
	}
}

function incMonth(delta,eltName) {
	displayMonth += delta;
	if (displayMonth >= 12) {
		displayMonth = 0;
		incYear(1,eltName);
	} else if (displayMonth <= -1) {
		displayMonth = 11;
		incYear(-1,eltName);
	} else {
		newCalendar(eltName);
	}
}

function incYear(delta,eltName) {
	displayYear = parseInt(displayYear + '') + delta;
	newCalendar(eltName);
}

function makeDaysGrid(startDay,day,intDaysInMonth,newCal,eltName) {
	var daysGrid;
	var month = newCal.getMonth();
	var year = newCal.getFullYear();
	var isThisYear = (year == new Date().getFullYear());
	var isThisMonth = (day > -1)
	daysGrid = '<table border=1 cellspacing=0 cellpadding=2><tr><td bgcolor=#ffffff nowrap>';
	daysGrid += '<font face="courier new, courier" size=2 color="black">';
	daysGrid += '<a href="javascript:hideElement(\'' + eltName + '\')"><font color="red">x</font></a>';
	daysGrid += '&nbsp;&nbsp;';
	daysGrid += '<a href="javascript:incMonth(-1,\'' + eltName + '\')"><font color="red">&laquo; </font></a>';

	daysGrid += '<b>';
	if (isThisMonth) { 
		daysGrid += '<font color="red">' + months[month] + '</font>'; 
	} else { 
		daysGrid += months[month]; 
	}
	daysGrid += '</b>';

	daysGrid += '<a href="javascript:incMonth(1,\'' + eltName + '\')"><font color="red"> &raquo;</font></a>';
	daysGrid += '&nbsp;&nbsp;&nbsp;';
	daysGrid += '<a href="javascript:incYear(-1,\'' + eltName + '\')"><font color="red">&laquo;</font> </a>';

	daysGrid += '<b>';
	if (isThisYear) { 
		daysGrid += '<font color=red>' + year + '</font>'; 
	} else { 
		daysGrid += ''+year; 
	}
	daysGrid += '</b>';

	daysGrid += '<a href="javascript:incYear(1,\'' + eltName + '\')"><font color="red"> &raquo;</font></a><br>';
	daysGrid += '&nbsp;Su Mo Tu We Th Fr Sa&nbsp;<br>&nbsp;';
	var dayOfMonthOfFirstSunday = (7 - startDay + 1);
	for (var intWeek = 0; intWeek < 6; intWeek++) {
		var dayOfMonth;
		for (var intDay = 0; intDay < 7; intDay++) {
			dayOfMonth = (intWeek * 7) + intDay + dayOfMonthOfFirstSunday - 7;
			if (dayOfMonth <= 0) {
				daysGrid += "&nbsp;&nbsp; ";
			} else if (dayOfMonth <= intDaysInMonth) {
				var color = "blue";
				if (day > 0 && day == dayOfMonth) color="red";
				daysGrid += '<a href="javascript:setDay(';
				daysGrid += dayOfMonth + ',\'' + eltName + '\')" '
				daysGrid += 'style="color:' + color + '">';
				var dayString = dayOfMonth + "</a> ";
				if (dayString.length == 6) dayString = '0' + dayString;
				daysGrid += dayString;
			}
		}
		if (dayOfMonth < intDaysInMonth) daysGrid += "<br>&nbsp;";
	}
	return daysGrid + "</td></tr></table>";
}

function setDay(day,eltName) {
	//JJR 11.13.2003 - added next to make sure month and day are always 2 positions
	var dayString = day;
	var monthString = (displayMonth + 1);
	if (dayString < 10){
		dayString = '0' + dayString;
	}
	if (monthString < 10) {
		monthString = '0' + monthString;
	}
	//JJR 11.13.2003 - end jjr add
	//JJR 11.13.2003 - changed next line to use new variables
	//displayElement.value = (displayMonth + 1) + "/" + day + "/" + displayYear;
	displayElement.value = monthString + "/" + dayString + "/" + displayYear;
	hideElement(eltName);
	if(autoSbm == 'Y') {
		document.forms[0].submit()
	}
}
	 

function fixPosition(divname) {
	divstyle = getDivStyle(divname);
	positionerImgName = divname + 'Pos';
	// hint: try setting isPlacedUnder to false
	isPlacedUnder = false;
	if (isPlacedUnder) {
		setPosition(divstyle,positionerImgName,true);
	} else {
		setPosition(divstyle,positionerImgName)
	}
}

function toggleDatePicker(eltName,formElt,A) {
  autoSbm = A	
  var x = formElt.indexOf('.');
  var formName = formElt.substring(0,x);
  var formEltName = formElt.substring(x+1);
  newCalendar(eltName,document.forms[formName].elements[formEltName]);
  //newCalendar(eltName,document.formName.formEltName);
  toggleVisible(eltName);
}