if (document.images) {
	button_a = new Image
	button_a_roll = new Image
	button_b = new Image
	button_b_roll = new Image
	button_c = new Image
	button_c_roll = new Image
	button_d = new Image
	button_d_roll = new Image
	button_e = new Image
	button_e_roll = new Image
	button_f = new Image
	button_f_roll = new Image
	button_g = new Image
	button_g_roll = new Image
	button_h = new Image
	button_h_roll = new Image
	button_i = new Image
	button_i_roll = new Image
	button_j = new Image
	button_j_roll = new Image
	button_k = new Image
	button_k_roll = new Image
	button_l = new Image
	button_l_roll = new Image
	button_m = new Image
	button_m_roll = new Image
	button_n = new Image
	button_n_roll = new Image
	button_o = new Image
	button_o_roll = new Image
	button_p = new Image
	button_p_roll = new Image
	button_q = new Image
	button_q_roll = new Image
	button_r = new Image
	button_r_roll = new Image
	button_s = new Image
	button_s_roll = new Image
	button_t = new Image
	button_t_roll = new Image


	

	
	
	
	
	
	button_a.src = "images/button_a.gif"
	button_a_roll.src = "images/button_a_roll.gif"
	button_b.src = "images/button_b.gif"
	button_b_roll.src = "images/button_b_roll.gif"
	button_c.src = "images/button_c.gif"
	button_c_roll.src = "images/button_c_roll.gif"
	button_d.src = "images/button_d.gif"
	button_d_roll.src = "images/button_d_roll.gif"
	button_e.src = "images/button_e.gif"
	button_e_roll.src = "images/button_e_roll.gif"
	button_f.src = "images/button_f.gif"
	button_f_roll.src = "images/button_f_roll.gif"
	button_g.src = "images/button_g.gif"
	button_g_roll.src = "images/button_g_roll.gif"
	button_h.src = "images/button_h.gif"
	button_h_roll.src = "images/button_h_roll.gif"
	button_i.src = "images/button_i.gif"
	button_i_roll.src = "images/button_i_roll.gif"
	button_j.src = "images/button_j.gif"
	button_j_roll.src = "images/button_j_roll.gif"
	button_k.src = "images/button_k.gif"
	button_k_roll.src = "images/button_k_roll.gif"
	button_l.src = "images/button_l.gif"
	button_l_roll.src = "images/button_l_roll.gif"
	button_m.src = "images/button_m.gif"
	button_m_roll.src = "images/button_m_roll.gif"
	button_n.src = "images/button_n.gif"
	button_n_roll.src = "images/button_n_roll.gif"
	button_o.src = "images/button_o.gif"
	button_o_roll.src = "images/button_o_roll.gif"
	button_p.src = "images/button_p.gif"
	button_p_roll.src = "images/button_p_roll.gif"
	button_q.src = "images/button_q.gif"
	button_q_roll.src = "images/button_q_roll.gif"
	button_r.src = "images/button_r.gif"
	button_r_roll.src = "images/button_r_roll.gif"
	button_s.src = "images/button_s.gif"
	button_s_roll.src = "images/button_s_roll.gif"
	button_t.src = "images/button_t.gif"
	button_t_roll.src = "images/button_t_roll.gif"
	}
	
else {
	button_a = ""
	button_a_roll = ""
	button_b = ""
	button_b_roll = ""
	button_c = ""
	button_c_roll = ""
	button_d = ""
	button_d_roll = ""
	button_e = ""
	button_e_roll = ""
	button_f = ""
	button_f_roll = ""
	button_g = ""
	button_g_roll = ""
	button_h = ""
	button_h_roll = ""
	button_i = ""
	button_i_roll = ""
	button_j = ""
	button_j_roll = ""
	button_k = ""
	button_k_roll = ""
	button_l = ""
	button_l_roll = ""
	button_m = ""
	button_m_roll = ""
	button_n = ""
	button_n_roll = ""
	button_o = ""
	button_o_roll = ""
	button_p = ""
	button_p_roll = ""
	button_q = ""
	button_q_roll = ""
	button_r = ""
	button_r_roll = ""
	button_s = ""
	button_s_roll = ""
	button_t = ""
	button_t_roll = ""
	}
	
function toggleLayer(divID){
	var e;
	e = document.getElementById(divID);
	e.style.visibility = (e.style.visibility == 'visible' ? 'hidden' : 'visible');
	e.style.display = (e.style.display == 'block' ? 'none' : 'block');	
	}
	
function toggleLayer2(imgID){
	var f;
	f = document.getElementById(imgID);
	f.style.visibility = (f.style.visibility == 'visible' ? 'hidden' : 'visible');
	f.style.display = (f.style.display == 'inline' ? 'none' : 'inline');	
	}
	
function toggleLayer3(imgID2){
	var g;
	g = document.getElementById(imgID2);
	g.style.visibility = (g.style.visibility == 'visible' ? 'hidden' : 'visible');
	g.style.display = (g.style.display == 'inline' ? 'none' : 'inline');	
	}