var rotate_delay = 12000; // delay in milliseconds (5000 = 5 secs)
current = -1;

function next() {
	if (document.slideform.slide[current+1]) {
		document.images.show.src = document.slideform.slide[current+1].value;
		document.slideform.slide.selectedIndex = ++current;
	}
	else
		first();
		
	links(current);
}

function previous() {
	if (current-1 >= 0) {
		document.images.show.src = document.slideform.slide[current-1].value;
		document.slideform.slide.selectedIndex = --current;
	}
	else
		last();
		
	links(current);
}

function first() {
	current = 0;
	document.images.show.src = document.slideform.slide[0].value;
	document.slideform.slide.selectedIndex = 0;
}

function last() {
	current = document.slideform.slide.length-1;
	document.images.show.src = document.slideform.slide[current].value;
	document.slideform.slide.selectedIndex = current;
}

function ap(text) {
	document.slideform.slidebutton.value = (text == "Stop") ? "Start" : "Stop";
	rotate();
}

function change() {
	current = document.slideform.slide.selectedIndex;
	document.images.show.src = document.slideform.slide[current].value;
	links(current);
}

function rotate() {
	if (document.slideform.slidebutton.value == "Stop") {
		current = (current == document.slideform.slide.length-1) ? 0 : current+1;
		document.images.show.src = document.slideform.slide[current].value;
		document.slideform.slide.selectedIndex = current;
		window.setTimeout("rotate()", rotate_delay);
	}
	links(current);
}