var SlideShowSpeed = 5000;
var crossFadeDuration = 4;

var totalpictures = 21;

var t;
var j = 0;
var preLoad = new Array();


function runSlideShow() 
{
	j = Math.floor(Math.random()*totalpictures) + 1;	 
	loadImage(j);
	if (document.all && document.images.Header2Image != null)
	{
	document.images.Header2Image.style.filter="blendTrans(duration=crossFadeDuration)";
	document.images.Header2Image.filters.blendTrans.Apply();
	}
	if (document.images.Header2Image != null)
	{
	document.images.Header2Image.src = preLoad[j].src;
	}
	if (document.all && document.images.Header2Image != null) 
	{
		document.images.Header2Image.filters.blendTrans.Play();
	}

	
	t = setTimeout('runSlideShow()', SlideShowSpeed);
}

function loadImage(p_index)
{
	preLoad[p_index] = new Image();	
	preLoad[p_index].src = '/img/subHeaders/img_'+ p_index +'.jpg';
} 


var count = 0;

function runCaseStudiesSlideShow(url)
{
	if (count < 3)
	{
		count++;
	}
	else
	{
		count = 1;
	}
	loadCaseStudiesImage(url, count);
	if (document.all && document.images.Header3Image != null)
	{
	document.images.Header3Image.style.filter="blendTrans(duration=crossFadeDuration)";
	document.images.Header3Image.filters.blendTrans.Apply();
	}

	if (document.images.Header3Image != null)
	{
	document.images.Header3Image.src = preLoad[count].src;
	}
	if (document.all && document.images.Header3Image != null) 
	{
		document.images.Header3Image.filters.blendTrans.Play();
	}
	
	t = setTimeout('runCaseStudiesSlideShow("' + url + '")', SlideShowSpeed);
}

function loadCaseStudiesImage(url, p_index)
{
	preLoad[p_index] = new Image();	
	preLoad[p_index].src = '/img/CaseStudies/' + url + '_' + p_index +'.jpg';
}