var currentSlide = 1;

//number of "slides" or sites to cycle through.
var numSlides = 15;

function slideFolio(col){

	var x = ((col-1)*-800)
	var folioChange = new Fx.Tween('folio', {duration:1500});

	folioChange.start('left',x);

	var cur = "trigger"+col;

	$(cur).addClass('current');

	for (i=1;i<=numSlides;i++){
		var loopLI = "trigger"+i;
		if (cur==loopLI){}else{
			$(loopLI).removeClass('current');
		}
	}
	
	currentSlide = col;
}

function next(){
	var nextSlide = currentSlide + 1;
	
	//if already on last slide
	if(nextSlide > numSlides){
		slideFolio(1);
	} else {
		slideFolio(nextSlide);
	}
}

function prev(){
	var prevSlide = currentSlide - 1;
	
	if(prevSlide < 1){
		slideFolio(numSlides);
	} else {
		slideFolio(prevSlide);
	}
}