// JavaScript Document

/* Javascript Date Selector
   by Warren Brown (03/01/2004 Radiokop South Africa)

   Script to place Month/day/year onto a web page, leap year enabled
*/

var date_arr = new Array;
var days_arr = new Array;

date_arr[0]=new Option("January",31);
date_arr[1]=new Option("February",28);
date_arr[2]=new Option("March",31);
date_arr[3]=new Option("April",30);
date_arr[4]=new Option("May",31);
date_arr[5]=new Option("June",30);
date_arr[6]=new Option("July",31);
date_arr[7]=new Option("August",30);
date_arr[8]=new Option("September",30);
date_arr[9]=new Option("October",31);
date_arr[10]=new Option("November",31);
date_arr[11]=new Option("December",30);

var dayS;
var monthS;
var yearS;
var defaultText = "Select";
var firstYear = 2000;
var lastYear = 2015;
var backgroundColour = 'white';

function setTheDate(d,m,y)
{
		dayS = d-1;
		monthS = m;
		yearS = y;
}

function fill_select(f)
{
        document.writeln("<SELECT style=\"width: 119px; background-color: " + backgroundColour + ";\" name=\"months\" onchange=\"update_days(document.frm)\">");

		document.writeln("<OPTION value=\"\" SELECTED>"+defaultText+"</OPTION>");

		for(x=0;x<12;x++)
		{
				v = x+1;
				document.writeln("<OPTION value=\""+v+"\"");
					if(v == monthS)
					{
						document.writeln(" SELECTED ");
					}
				document.writeln(">"+date_arr[x].text);
		}
        document.writeln("</SELECT><SELECT name=\"days\" style=\"width: 75px; background-color: " + backgroundColour + ";\"></SELECT>");
        selection=f.months[f.months.selectedIndex].value;
}

function update_days(f)
{
		if(f.months.selectedIndex != 0)		   		  
		{
			
			if(dayS >= 0)			
				temp = dayS;
			else
				temp = -1;

			if(dayS == -1) temp=f.days.selectedIndex;
	
			for(x=days_arr.length;x>0;x--)
			{
					days_arr[x]=null;
					f.days.options[x]=null;
			 }
	
			selection=parseInt(date_arr[f.months[f.months.selectedIndex].value-1].value);
			ret_val = 0;
			if(date_arr[f.months[f.months.selectedIndex].value-1].value == 28)
			{
					year=parseInt(f.years.options[f.years.selectedIndex].value);
					if (year % 4 != 0 || year % 100 == 0 ) ret_val=0;
					else
							if (year % 400 == 0)  ret_val=1;
							else
									ret_val=1;
			}
			selection = selection + ret_val;
			for(x=1;x < selection+1;x++)
	
			{
					days_arr[x-1]=new Option(x);
					f.days.options[x-1]=days_arr[x-1];
			}
			if (temp == -1) f.days.options[0].selected=true;
			else
				 f.days.options[temp].selected=true;
				 
			dayS = -1;
	}
}
function year_install(f)
{
        document.writeln("<SELECT name=\"years\" style=\"width: 75px; background-color: " + backgroundColour + ";\" onchange=\"update_days(frm)\" >")
        for(x=lastYear;x>=firstYear;x--) 
		{
			document.writeln("<OPTION value=\""+x+"\" ");
				if(x == yearS)
						document.writeln(" SELECTED ");									
			document.writeln(">"+x);
		}
		
		
        document.writeln("</SELECT>");
        update_days(f)
}