/*
Script: CountDown Timer
Description: Counts down or up from a date
Author: Andrew Urquhart
Home: http://www.andrewu.co.uk/clj/countdown/
History:
20040117 0035UTC	v1		Andrew Urquhart		Created
20040119 1943UTC	v1.1	Andrew Urquhart		Made more accessible/easier to use
20040317 1548UTC	v1.2	Andrew Urquhart		Implemented a less intrusive error message
*/
function CD_UpdateDisplay(strContent, strTagId) {
	var objHandle = document.getElementById(strTagId);
	if (objHandle && (typeof objHandle.innerHTML).toString().toLowerCase() != 'undefined') {
		objHandle.innerHTML = strContent;
	}
};

function CD_Tick(strTagId, strEventDate, withLineBreaks) 
{
	var objDateNow		= new Date();
	var intMsDelay		= 1000 - objDateNow.getMilliseconds();
	var intEventDate	= new Date(strEventDate).valueOf();
	CD_DrawTime(objDateNow, strTagId, intEventDate, withLineBreaks);
	setTimeout("CD_Tick(\"" + strTagId + "\", " + intEventDate + ", " + withLineBreaks + ")", intMsDelay);
};

function CD_DrawTime(strDate, strTagId, intEventDate, withLineBreaks) 
{
	var intMs = intEventDate - new Date(strDate).valueOf();
	if (intMs <= 0) 
	{
		intMs = intMs * -1;
	}
	var intDays = Math.floor(intMs / 864E5);
	intMs = intMs - (intDays * 864E5);
	var intHours = Math.floor(intMs / 36E5);
	intMs = intMs - (intHours * 36E5);
	var intMinutes = Math.floor(intMs / 6E4);
	intMs = intMs - (intMinutes * 6E4);
	var intSeconds = Math.floor(intMs / 1000);
	if (withLineBreaks)
	{
		var strTimeString = intDays + " day" + (intDays == 1 ? " <br>" : "s <br>") + CD_ZP(intHours) + "h " + CD_ZP(intMinutes) + "m " + CD_ZP(intSeconds) + "s";
	}
	else if (!withLineBreaks)
	{
		var strTimeString = intDays + " day" + (intDays == 1 ? " " : "s ") + CD_ZP(intHours) + "h " + CD_ZP(intMinutes) + "m " + CD_ZP(intSeconds) + "s";	
	}
	CD_UpdateDisplay(strTimeString, strTagId);
};

function CD_ZP(objVal) 
{
	var str = "" + objVal;
	return (str.length < 2 ? "0" + str : str);
};

function CD_Replace(strElementName, withLineBreaks)
{
	var handle = document.getElementById(strElementName);
	if (handle && (typeof handle.innerHTML).toString().toLowerCase() != 'undefined') 
	{
		var strDate	= handle.innerHTML;
		if (!isNaN(new Date(strDate))) 
		{
			CD_Tick(strElementName, strDate, withLineBreaks);
			if (handle.style) 
			{
				handle.style.visibility = "visible";
			}
		}
		else 
		{
			handle.innerHTML = strDate + "<a href=\"http://www.andrewu.co.uk/clj/countdown/\" title=\"Countdown Error: Invalid date format used, check documentation (see link)\">*</a>";
		}
	}
	return handle;
};

function CD_Init() 
{
	var strTagPrefix	= "countdown";
	var objHandle		= true; // temp value
	if (document.getElementById) 
	{
		for (var i=1; objHandle; ++i) 
		{
			var strElementName = strTagPrefix + i;
			var objHandle = CD_Replace(strElementName, true);
		}
		CD_Replace("halloweenCount", false);
	}
};