function toggleCalendar(objname){

	var DivDisplay = document.getElementById(objname).style;

	if (DivDisplay.display  == 'none') {

	  DivDisplay.display = 'block';

	}else{

	  DivDisplay.display = 'none';

	}

}



function setValue(objname, d){

	document.getElementById(objname).value = d;



	var dp = document.getElementById(objname+"_dp").value;

	if(dp == true){

		var date_array = d.split("-");

		document.getElementById(objname+"_day").selectedIndex = date_array[2];

		document.getElementById(objname+"_month").selectedIndex = date_array[1];

		document.getElementById(objname+"_year").value = date_array[0];

		

		toggleCalendar('div_'+objname);

	}

}



function tc_setDay(objname, dvalue, path){

	var obj = document.getElementById(objname);

	var date_array = obj.value.split("-");

	

	if(isDate(dvalue, date_array[1], date_array[0])){

		obj.value = date_array[0] + "-" + date_array[1] + "-" + dvalue;

		

		var obj = document.getElementById(objname+'_frame');

		

		var year_start = document.getElementById(objname+'_year_start').value;

		var year_end = document.getElementById(objname+'_year_end').value;

		var dp = document.getElementById(objname+'_dp');

		

		obj.src = path+"calendar_form.php?objname="+objname.toString()+"&selected_day="+dvalue+"&selected_month="+date_array[1]+"&selected_year="+date_array[0]+"&year_start="+year_start+"&year_end="+year_end+"&dp="+dp;

		

	}else document.getElementById(objname+"_day").selectedIndex = date_array[2];

}



function tc_setMonth(objname, mvalue, path){

	var obj = document.getElementById(objname);

	var date_array = obj.value.split("-");

	

	if(isDate(date_array[2], mvalue, date_array[0])){

		obj.value = date_array[0] + "-" + mvalue + "-" + date_array[2];

	

		var obj = document.getElementById(objname+'_frame');

		

		var year_start = document.getElementById(objname+'_year_start').value;

		var year_end = document.getElementById(objname+'_year_end').value;

		var dp = document.getElementById(objname+'_dp');

		

		obj.src = path+"calendar_form.php?objname="+objname.toString()+"&selected_day="+date_array[2]+"&selected_month="+mvalue+"&selected_year="+date_array[0]+"&year_start="+year_start+"&year_end="+year_end+"&dp="+dp;

	}else document.getElementById(objname+"_month").selectedIndex = date_array[1];

}



function tc_setYear(objname, yvalue, path){

	var obj = document.getElementById(objname);

	var date_array = obj.value.split("-");

	

	if(isDate(date_array[2], date_array[1], yvalue)){

		obj.value = yvalue + "-" + date_array[1] + "-" + date_array[2];

	

		var obj = document.getElementById(objname+'_frame');

		

		var year_start = document.getElementById(objname+'_year_start').value;

		var year_end = document.getElementById(objname+'_year_end').value;

		var dp = document.getElementById(objname+'_dp');

		

		obj.src = path+"calendar_form.php?objname="+objname.toString()+"&selected_day="+date_array[2]+"&selected_month="+date_array[1]+"&selected_year="+yvalue+"&year_start="+year_start+"&year_end="+year_end+"&dp="+dp;

	}else document.getElementById(objname+"_year").value = date_array[0];

}



function yearEnter(e){

	var characterCode;

	

	if(e && e.which){ //if which property of event object is supported (NN4)

		e = e;

		characterCode = e.which; //character code is contained in NN4's which property

	}else{

		e = event;

		characterCode = e.keyCode; //character code is contained in IE's keyCode property

	}

	

	if(characterCode == 13){ 

		//if Enter is pressed, do nothing		

		return true;

	}else return false;

}





// Declaring valid date character, minimum year and maximum year

var minYear=1900;

var maxYear=2100;



function isInteger(s){

	var i;

    for (i = 0; i < s.length; i++){   

        // Check that current character is number.

        var c = s.charAt(i);

        if (((c < "0") || (c > "9"))) return false;

    }

    // All characters are numbers.

    return true;

}



function stripCharsInBag(s, bag){

	var i;

    var returnString = "";

    // Search through string's characters one by one.

    // If character is not in bag, append to returnString.

    for (i = 0; i < s.length; i++){   

        var c = s.charAt(i);

        if (bag.indexOf(c) == -1) returnString += c;

    }

    return returnString;

}



function is_leapYear(year){

	return (year % 4 == 0) ?

		!(year % 100 == 0 && year % 400 != 0)	: false;

}



function daysInMonth(month, year){

	var days = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

	return (month == 2 && is_leapYear(year)) ? 29 : days[month-1];

}

	

function DaysArray(n) {

	for (var i = 1; i <= n; i++) {

		this[i] = 31

		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}

		if (i==2) {this[i] = 29}

   } 

   return this

}



function isDate(strDay, strMonth, strYear){

/*

	//bypass check date	

	strYr=strYear

	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)

	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)

	for (var i = 1; i <= 3; i++) {

		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)

	}

	month=parseInt(strMonth)

	day=parseInt(strDay)

	year=parseInt(strYr)

	if (strMonth.length<1 || month<1 || month>12){

		alert("Please enter a valid month")

		return false

	}

	if (strDay.length<1 || day<1 || day>31 || day > daysInMonth(month, year)){

		alert("Please enter a valid day")

		return false

	}

	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){

		alert("Please enter a valid 4 digit year between "+minYear+" and "+maxYear)

		return false

	}*/

	return true

}