slideTimer = 0;
slideLast = 0;
slideNow = 1;
slideSpeed = 10;
slideStep = 20;
slideIsMoving = 0;

slideWidth = 940;

function slideRightMove() {
document.getElementById('slide' + slideNow).style.left = document.getElementById('slide' + slideNow).offsetLeft - slideStep + 'px';
document.getElementById('slide' + slideNext).style.left = document.getElementById('slide' + slideNext).offsetLeft - slideStep + 'px';
if(document.getElementById('slide' + slideNext).offsetLeft <= 0) {
	document.getElementById('slide' + slideNext).style.left = 0;
	document.getElementById('slide' + slideNow).style.left = (-1) * slideWidth + 'px';
	slideIsMoving = 0;
	slideNow = slideNext;
	}
else {
	slideTimer = window.setTimeout('slideRightMove()', slideSpeed);
	}
}

function slideLeftMove() {
document.getElementById('slide' + slideNow).style.left = document.getElementById('slide' + slideNow).offsetLeft + slideStep + 'px';
document.getElementById('slide' + slideNext).style.left = document.getElementById('slide' + slideNext).offsetLeft + slideStep + 'px';
if(document.getElementById('slide' + slideNext).offsetLeft >= 0) {
	document.getElementById('slide' + slideNext).style.left = 0;
	document.getElementById('slide' + slideNow).style.left = slideWidth + 'px';
	slideIsMoving = 0;
	slideNow = slideNext;
	}
else {
	slideTimer = window.setTimeout('slideLeftMove()', slideSpeed);
	}
}


function slideLeft() {
if(!slideIsMoving) {
	slideNext = slideNow - 1;
	if(slideNext < 1) {slideNext = slideLast;}
	slideIsMoving = 1;
	document.getElementById('slide' + slideNext).style.left = (-1) * slideWidth + 'px';
	document.getElementById('slide' + slideNow).style.left = '0px';
	slideLeftMove();
	}
}


function slideRight() {
if(!slideIsMoving) {
	slideNext = slideNow + 1;
	if(slideNext > slideLast) {slideNext = 1;}
	slideIsMoving = 1;
	document.getElementById('slide' + slideNext).style.left = slideWidth + 'px';
	document.getElementById('slide' + slideNow).style.left = '0px';
	slideRightMove();
	}
}

function sliderLoaded(num) {
if(num >= slideLast) {
	document.getElementById('btnLeft').style.display = 'block';
	document.getElementById('btnRight').style.display = 'block';
	}
}