if (document.images) {
                      var img1on = new Image();
	              img1on.src = "./img/menu_pos_real_on.jpg";
	              var img1off = new Image();
	              img1off.src = "./img/menu_pos_real.jpg";

	              var img2on = new Image();
	              img2on.src = "./img/menu_pos_on.jpg";
	              var img2off = new Image();
	              img2off.src = "./img/menu_pos.jpg";

	              var img3on = new Image();
	              img3on.src = "./img/menu_ordering-system_on.jpg";
	              var img3off = new Image();
	              img3off.src = "./img/menu_ordering-system.jpg";

                      var img4on = new Image();
	              img4on.src = "./img/menu_karatto_on.jpg";
	              var img4off = new Image();
	              img4off.src = "./img/menu_karatto.jpg";

	              var img5on = new Image();
	              img5on.src = "./img/menu_rollpaper_on.jpg";
	              var img5off = new Image();
	              img5off.src = "./img/menu_rollpaper.jpg";

                      var img6on = new Image();
	              img6on.src = "./img/menu_drink_on.jpg";
	              var img6off = new Image();
	              img6off.src = "./img/menu_drink.jpg";

                      var img7on = new Image();
	              img7on.src = "./img/menu_freepos_on.jpg";
	              var img7off = new Image();
	              img7off.src = "./img/menu_freepos.jpg";

                      var img8on = new Image();
	              img8on.src = "./img/contact_buttom_on.gif";
	              var img8off = new Image();
	              img8off.src = "./img/contact_buttom_off.gif";
				  
				      var img9on = new Image();
	              img9on.src = "./img/menu_vt-g10_on.jpg";
	              var img9off = new Image();
	              img9off.src = "./img/menu_vt-g10.jpg";
				  
				      var img10on = new Image();
	              img10on.src = "./img/menu_vt-s10_on.jpg";
	              var img10off = new Image();
	              img10off.src = "./img/menu_vt-s10.jpg";
				  
				      var img11on = new Image();
	              img11on.src = "./img/menu_support_on.jpg";
	              var img11off = new Image();
	              img11off.src = "./img/menu_support.jpg";
				  
				  
				  var img12on = new Image();
	              img12on.src = "./img/menu_bath_on.jpg";
	              var img12off = new Image();
	              img12off.src = "./img/menu_bath.jpg";
				  
				      var img13on = new Image();
	              img13on.src = "./img/fax_buttom_on.gif";
	              var img13off = new Image();
	              img13off.src = "./img/fax_buttom_off.gif";
				  
				  var img14on = new Image();
	              img14on.src = "./img/menu_semoor_on.jpg";
	              var img14off = new Image();
	              img14off.src = "./img/menu_semoor.jpg";


// ポイント時の処理
function On(name) {
	           if (document.images) {
                                         document.images[name].src = eval(name + 'on.src');
                                         }
                   }

// 放した時の処理
function Off(name) {
                    if (document.images) {
                                          document.images[name].src = eval(name + 'off.src');
                                          }
                    }

                   }