var marketimgs = new Array();
var img_path = "../images/vmux_info_images/";
marketimgs[0] = "specmarket_ambulance.png";
marketimgs[1] = "specmarket_fire.png";
marketimgs[2] = "specmarket_military.png";
marketimgs[3] = "specmarket_transitbus.png";
marketimgs[4] = "specmarket_schoolbus.png";

var markettext = new Array();
markettext[0] = "Ambulance";
markettext[1] = "Fire";
markettext[2] = "Military";
markettext[3] = "Transit Bus";
markettext[4] = "School Bus";

var current_marketimg = 0;

Event.observe(window, 'load', function() {
	Event.observe($('prev_market_arrow'),'click',show_prev_marketimg);
	Event.observe($('next_market_arrow'),'click',show_next_marketimg);
});

function show_prev_marketimg() {
	switch_marketimg(-1);
}

function show_next_marketimg() {
	switch_marketimg(1);
}

function switch_marketimg(direction) {
	
	current_marketimg += direction;
	
	if ( current_marketimg < 0 ) {
		current_marketimg = marketimgs.length - 1;
	}
	if ( current_marketimg >= marketimgs.length ) {
		current_marketimg = 0;
	}
	
	$('market_img').src = img_path + marketimgs[current_marketimg];
	$('market_title').innerHTML = "<h4>" + markettext[current_marketimg] + "</h4>";
}