var imagedir = 'images/frontpage/';
var secondaryext = 'bg';
var imageext = '.jpg';
var currentimage = 2;
var imagecount = 7;
var duration = 4;
var p_imgcache = [];
var s_imgcache = [];

function switchStart()
{
	setTimeout("switchImage()",duration*1000);
	for( var i = 1; i <= imagecount; i++)
	{
		p_imgcache[i] = new Image;
		p_imgcache[i].src = imagedir+i+imageext;
		s_imgcache[i] = new Image;
		s_imgcache[i].src = imagedir+i+secondaryext+imageext;
	}
}

function switchImage()
{
	var pimg = document.getElementById('slideshow_image');
	var simg = document.getElementById('rmheader_image');
	if (pimg && simg)
	{
		if (p_imgcache[currentimage] != null && s_imgcache[currentimage] != null)
		{
			$("#slideshow_image").fadeOut(1500);
			$("#rmheader_image").fadeOut(1500);
			setTimeout('swapImage()', 1500);
			$("#slideshow_image").fadeIn(1500);
			$("#rmheader_image").fadeIn(1500);
		}
	}
}

function swapImage()
{
	var pimg = document.getElementById('slideshow_image');
	var simg = document.getElementById('rmheader_image');
	pimg.src = p_imgcache[currentimage].src;
	simg.src = s_imgcache[currentimage].src;
	currentimage++;
	if (currentimage > imagecount)
	{
		currentimage = 1;
	}
	setTimeout("switchImage()",duration*1000);
}