// JavaScript Document
// copyright 2011 Kraxon, www.kraxon.co.uk

var img_count = 5; //how many images in slide show
var img_display = 2000; // interval between slide, milliseconds. ie 2000 = 2 seconds
var img_fade = 2000; // how long should a slide take, milliseconds. ie 2000 = 2 seconds
var img_directory = "images/"; // which directory are the images stored

image_src = new Array();
image_src[0]="toppic1a.jpg"; //current image, excluded from pre-load
image_src[1]="toppic2a.jpg";
image_src[2]="toppic3.jpg";
image_src[3]="toppic4.jpg";
image_src[4]="toppic5.jpg";

// nothing to change below this //
var opv = 100;
var x = 0;
var y = 0;
var z = 1;

function preload() {
	
	for(x=1; x<=img_count-1; x++) {	
		image_get = new Image(); 
		image_get.src = img_directory + image_src[x];
	}
	setTimeout('startslide()',img_display);
}

function startslide(){
	if(y == img_count-1){
		y = 0;
	}else{
		y = y + 1;
	}
	if(z == 1){
		z = 0;
		opv = 100;
		var img = document.getElementById('image2');
		img.src = img_directory + image_src[y];
	}else{
		z = 1;
		opv = 0;
		var img = document.getElementById('image1');
		img.src = img_directory + image_src[y];
	}
	
	
	setTimeout('slideimage()',img_fade / 100);
}
 
function slideimage() {
	var img = document.getElementById('image1');
	if(opv >= 0 && opv <= 100){
		if(z == 1){
			opv = opv + 1;
		}else{
			opv = opv - 1;
		}
		img.style.opacity = (opv/100).toString();
		if (navigator.appName=="Microsoft Internet Explorer"){
			img.style.filter  = "alpha(opacity="+opv.toString()+")";
		}
		setTimeout('slideimage()',img_fade / 100);
	}else{
		setTimeout('startslide()',img_display);
	}
}