var sImage = new Image;
	var store_img = 0;
	sImage.src = "../images/" + img_array[store_img] + ".jpg";
	var img_ctr = img_array.length;
	document.images["slideshow_img"].src = "../images/" + img_array[store_img] + ".jpg";

function load_prev_img_onclick()
{	
	store_img--;
	if (store_img < 0) {
		store_img = img_array.length - 1;
		}
	sImage.src = "../images/" + img_array[store_img] + ".jpg";
	document.slideshow_img.src =  sImage.src;
	return false;
}

function load_next_img_onclick()
{	
	store_img++;
	if(store_img < img_array.length) {
		
		}
	else {
		store_img = 0;
		}
	sImage.src =  "../images/" + img_array[store_img] + ".jpg";
	document.slideshow_img.src = sImage.src;
	return false;
}