var mainImages = new Images();
var num = Math.floor(Math.random() * 3);
var t;

mainImgUpdate();

$(".promo .list li a.prev").click(function() {
	if(num == 0) {
		num = 2;
	} else {
		num = num - 1;
	}
	mainImgUpdate();
});
$(".promo .list li a.next").click(function() {
	if(num == 2) {
		num = 0;
	} else {
		num = num + 1;
	}
	mainImgUpdate();
});

function Images() {
	this.images = new Array();
	this.images[0] = "lauren_rockface/images/img-01.jpg";
	this.images[1] = "lauren_rockface/images/iag.jpg";
	this.images[2] = "lauren_rockface/images/bosque_power.jpg";
	
	this.title = new Array();
	this.title[0] = "Solar Power";
	this.title[1] = "IAG";
	this.title[2] = "Bosque Power";
}

function mainImgUpdate() {
	with(mainImages) {
		$("#mainimg").html("<img src='"+ images[num] +"' width='945' height='235' alt='"+ title[num] +"'>");
	}
	switch(num) {
		case 0:
			$(".promo-txt-holder .promo-txt h1").html("Powering the <br /> Future");
			$(".promo-txt-holder").css({"visibility": "visible"});
			break;
		case 1:
			$(".promo-txt-holder .promo-txt h1").html("");
			$(".promo-txt-holder").css({"visibility": "hidden"});
			break;
		case 2:
			$(".promo-txt-holder .promo-txt h1").html("");
			$(".promo-txt-holder").css({"visibility": "hidden"});
			break;
		default:
			$(".promo-txt-holder .promo-txt h1").html("Powering the <br /> Future of Solar");
			$(".promo-txt-holder").css({"visibility": "visible"});
	}
}