var getslideno = window.location.hash;


getslideno = getslideno.replace('#', '');

var startslide = getslideno;

$('.ppt li:gt(0)').hide();
$('.ppt li:last').addClass('last');
$('.ppt li:first').addClass('first');
if(getslideno != "")
{
$('.ppt li#slide'+startslide).show();
}


$('#play').hide();


if(getslideno != "")
{
var cur = $('.ppt li#slide'+startslide);
}
else
{
var cur = $('.ppt li:first');
}


var interval;

$('#fwd').click( function() {
	goFwd();
	showPause();
} );

$('#back').click( function() {
	goBack();
	showPause();
} );

$('#stop').click( function() {
	stop();
	showPlay();
} );

$('#play').click( function() {
	start();
	showPause();
} );

function goFwd() {
	stop();
	forward();
	start();
}

function goBack() {
	stop();
	back();
	start();
}

function back() {
	cur.fadeOut( 1000 );
	if ( cur.attr('class') == 'first' )
		cur = $('.ppt li:last');
	else
		cur = cur.prev();
	cur.fadeIn( 1000 );
}

function forward() {
	cur.fadeOut( 1000 );
	if ( cur.attr('class') == 'last' )
		cur = $('.ppt li:first');
	else
		cur = cur.next();
	cur.fadeIn( 1000 );
}

function showPause() {
	$('#play').hide();
	$('#stop').show();
}

function showPlay() {
	$('#stop').hide();
	$('#play').show();
}

function start() {
var myRegExp = "tips";
var string1 = window.location;
var string2 = String(string1);

var matchPos1 = string2.search(myRegExp);

if(matchPos1 != -1)
interval = setInterval( "forward()", 20000 );
else
interval = setInterval( "forward()", 5000 );




}

function stop() {
	clearInterval( interval );
}

$(function() {
	start();
});