var ver4 = (navigator.appVersion.charAt(0) == "4");
var NN4 = ver4 && (navigator.appName == "Netscape");
var IE4 = ver4 && (navigator.appName.charAt(0) == "M");
var NN3 = ((navigator.appVersion.charAt(0) == "3") && (navigator.appName == "Netscape"));
if(NN3 || NN4 || IE4){ var menu = new Array();
        menu[1] = new Image(); menu[1].src="images/line00.gif";
        menu[2] = new Image(); menu[2].src="images/nb3_line01.gif";
        menu[3] = new Image(); menu[3].src="images/point_01.gif";
        menu[4] = new Image(); menu[4].src="images/nb3_00.gif";
        menu[5] = new Image(); menu[5].src="images/nb3_01.gif";
        menu[6] = new Image(); menu[6].src="images/resq_line01.gif";
        menu[7] = new Image(); menu[7].src="images/point_02.gif";
        menu[8] = new Image(); menu[8].src="images/line02_sp.gif";
        menu[9] = new Image(); menu[9].src="images/nb3_line02.gif";
        menu[10] = new Image(); menu[10].src="images/resq_line02.gif";
        menu[11] = new Image(); menu[11].src="images/main_sp.gif";
        menu[12] = new Image(); menu[12].src="images/nb3.gif";
        menu[13] = new Image(); menu[13].src="images/3g_line01.gif";
        menu[14] = new Image(); menu[14].src="images/3g_line02.gif";
        menu[15] = new Image(); menu[15].src="images/point_03.gif";
        menu[16] = new Image(); menu[16].src="images/3g.gif";
        menu[17] = new Image(); menu[17].src="images/click.gif";
        menu[18] = new Image(); menu[18].src="images/click01.gif";
}
function m_in(nam,num) {
if(NN3 || NN4 || IE4) document.images[nam].src = menu[num].src;} 

function m_out(nam,num) {
if(NN3 || NN4 || IE4) document.images[nam].src = menu[num].src;}