var labor_images = new Array();
var labor_images_idx = -1;

/**
*
*/
function showImage(dir){
	// dir should be -1 or +1
	dir = parseInt(dir);
	new_idx = labor_images_idx + dir;
	if (new_idx > labor_images.length-1) {
		new_idx = 0;
	} else if (new_idx < 0) {
		new_idx = labor_images.length-1;
	}
	loadContent(new_idx);
}


/**
*
*/
function loadContent(idx){
	// Load first image	
	labor_images_idx = idx;
	obj = document.getElementById('diaimage');
	if (obj && labor_images.length > 0) {
		obj.src = labor_images[idx][0];
		content_div_id_show = labor_images[idx][1];
	}
	
	// hide all texts except for the intended
	for (i in labor_images) {
		content_div_id = labor_images[i][1];
		obj = document.getElementById(content_div_id);
		if (content_div_id == content_div_id_show) {
			obj.style.display = 'block';
		} else {
			obj.style.display = 'none';
		}
	}
	
}