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 o = document.getElementById(id)
	if(o){
		var object = o.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)
}  

// =============================

var imgs = new Array;

var imgroot = '/gfx/imgswp/';
var swapterm = 10000;
var swapspeed = 3000;

for(var t = 1;t <= 9; t++){ 
	var l = imgs.length;
	imgs[l] = new Image();
	imgs[l].src = imgroot+'imgswp'+t+'.jpg';
}


var counter = 1;

function imgswp(){
document.getElementById('imgswp').src = imgs[counter].src;
counter++;
if(counter == imgs.length)
	counter = 0;
}

function repeatme(){
	fadeout();
	setTimeout('imgswp()',swapspeed-10);
	setTimeout('fadein()',swapspeed);
	setTimeout('repeatme()',swapterm);
}

setTimeout('repeatme()',swapterm);


function fadein(){
opacity('imgswp', 0, 100, swapspeed);
}
function fadeout(){
opacity('imgswp', 100, 0, swapspeed);
}