var current = 0;

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

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

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

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

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

function change()
{ // this is for the pulldown menu
	current = document.getElementById('formname').slide.selectedIndex;
	document.images.show.src = document.getElementById('formname').slide[current].value;
}

function rotate()
{
	if (document.getElementById('formname').slidebutton.value == "Stop") 
	{
		current = (current == document.getElementById('formname').slide.length-1) ? 0 : current+1;
		document.images.show.src = document.getElementById('formname').slide[current].value;
		document.getElementById('formname').slide.selectedIndex = current;
		window.setTimeout("rotate()", 5000);
	}
}