var menu_img_path = "/skin/img/";
var img_plus = "plus.gif";
var img_minus = "minus.gif";

function show_hide(id, img) {
	div_id = document.getElementById(id);
	if (img.src.indexOf(img_plus)>-1) {
		img.src = menu_img_path+img_minus;
		div_id.style.display = "block";
	}
	else {
		img.src = menu_img_path+img_plus;
		div_id.style.display = "none";
	}
}