function show_hide(e_div, e_img) {
	var id_div = document.getElementById(e_div).style;
	var id_img = document.getElementById(e_img);
	
	if(id_div.display == "block") {
		id_div.display = "none";
		id_img.src = "img/tours/show_more_btn.gif";
		id_img.alt = "show more";
	}
	else {
		id_div.display = "block";
		id_img.src = "img/tours/show_less_btn.gif";
		id_img.alt = "show less";
	}
	return false;
}