window.onload = initAll;

var currImg = 0;

var captionText = new Array(
	"Trailer Compartment Composite Lavatory (TCL) car Sc59404 before re-instatement of its interior.",
	"Sc59404 after asbestos stripping, with compartment partitions in-situ.",
	"Sc59404 with interior refurbishment in progress.",
	"Sc59404 external repaint underway, SRPS Painting Squad in action.",
	"Sc59404 almost ready for its first top coat.",
	"Sc59404 complete. It just needs a power car at each end to make it useful!"
)

function initAll() {
	document.getElementById("imgtext").innerHTML = captionText[0];
	document.getElementById("prevLink").onclick = processPrevious;
	document.getElementById("nextLink").onclick = processNext;
}

function processPrevious() {
	newSlide(-1);
}

function processNext() {
	newSlide(1);
}

function newSlide(direction) {
	var imgCt = captionText.length;

	currImg = currImg + direction;
	if (currImg < 0) {
		currImg = imgCt-1;
	}
	if (currImg == imgCt) {
		currImg = 0;
	}
	document.getElementById("slideshow").src = "images/10085-88/10086/10086_" + currImg + ".jpg";
	document.getElementById("imgtext").innerHTML = captionText[currImg];
}

