function opacity(id, opacStart, opacEnd, millisec) {
	//speed for each frame
	var speed = Math.round(millisec / 100);
	var timer = 0;

	//determine the direction for the blending, if start and end are the same nothing happens
	if(opacStart > opacEnd) {
		for(i = opacStart; i >= opacEnd; i--) {
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	} else if(opacStart < opacEnd) {
		for(i = opacStart; i <= opacEnd; i++)
			{
			setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
			timer++;
		}
	}
}

//change the opacity for different browsers
function changeOpac(opacity, id) {
	var object = document.getElementById(id).style; 
	object.opacity = (opacity / 100);
	object.MozOpacity = (opacity / 100);
	object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";
}

function shiftOpacity(id, millisec) {
	//if an element is invisible, make it visible, else make it ivisible
	if(document.getElementById(id).style.opacity == 0) {
		opacity(id, 0, 100, millisec);
	} else {
		opacity(id, 100, 0, millisec);
	}
}

function blendimage(divid, imageid, imagefile, millisec) {
	var speed = Math.round(millisec / 100);
	var timer = 0;
	
	//set the current image as background
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")";
	
	//make image transparent
	changeOpac(0, imageid);
	
	//make new image
	document.getElementById(imageid).src = imagefile;

	//fade in image
	for(i = 0; i <= 100; i++) {
		setTimeout("changeOpac(" + i + ",'" + imageid + "')",(timer * speed));
		timer++;
	}
}

function currentOpac(id, opacEnd, millisec) {
	//standard opacity is 100
	var currentOpac = 100;
	
	//if the element has an opacity set, get it
	if(document.getElementById(id).style.opacity < 100) {
		currentOpac = document.getElementById(id).style.opacity * 100;
	}

	//call for the function that changes the opacity
	opacity(id, currentOpac, opacEnd, millisec)
}

function fadeImage()
{
	var theImage = document.getElementById('blendimage').src;
	if(theImage.indexOf("/Images/Main/main_image_1.jpg") > -1)
		{ 
			blendimage('MainImage','blendimage', '/Images/Main/main_image_2.jpg',800);
		}
	if(theImage.indexOf("/Images/Main/main_image_2.jpg") > -1)
		{ 
			blendimage('MainImage','blendimage', '/Images/Main/main_image_3.jpg',800);
		}
	if(theImage.indexOf("/Images/Main/main_image_3.jpg") > -1)
		{ 
			blendimage('MainImage','blendimage', '/Images/Main/main_image_1.jpg',800);
		}
	InitializeTimer();
}

var secs;
var timerID = null;
var timerRunning = false;
var delay = 1000;

function InitializeTimer()
{
	secs = 5;
	StopTheClock();
	StartTheTimer();
}
function StopTheClock()
{
	if(timerRunning)
	{
		clearTimeout(timerID);
		timerRunning = false;
	}
}
function StartTheTimer()
{
	if (secs==0)
	{
		StopTheClock();
		fadeImage();
	}
	else
	{
		secs = secs - 1;
    timerRunning = true;
    timerID = self.setTimeout("StartTheTimer()", delay);
	}
}



function WriteFlashObject(flashUrl, width, height, uniqueId)
{
	var theUniqueid = '';
	if (uniqueId != null)
	{
		if (uniqueId.length > 0)
		{
			theUniqueid = ' id=\"' + uniqueId + '\"';
		}
	}
	if (navigator.userAgent.indexOf("MSIE") == -1)
	{
		document.write('<embed src="' + flashUrl + '"' + theUniqueid + ' quality="high" wmode="transparent" pluginspage="<http://www.macromedia.com/go/getflashplayer>http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="' + width +'" height="' +  height +'"></embed>');
	} else if(navigator.userAgent.indexOf("MSIE") != -1)
	{
		document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="<http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0>http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0"  width="' + width +  '" height="' + height + '"><param name="movie" value="'  +  flashUrl +'" /><param name="wmode" value="transparent" /><param name="quality" value="high" /></object>');
	}
}