window.onerror = null;
var ver4 = (navigator.appVersion.charAt(0) >= "4");
var NN4  = ver4 && (navigator.appName.charAt(0) == "N");
var IE4  = ver4 && (navigator.appName.charAt(0) == "M");
var NN3  = ((navigator.appVersion.charAt(0) == "3") &&
            (navigator.appName.charAt(0) == "N"));

if(NN3 || NN4 || IE4){
var img_b = new Array();

img_b[1] = new Image(); img_b[1].src = "images/menu_home.gif"
img_b[2] = new Image(); img_b[2].src = "images/menu_hoiku.gif"
img_b[3] = new Image(); img_b[3].src = "images/menu_day.gif"
img_b[4] = new Image(); img_b[4].src = "images/menu_event.gif"
img_b[5] = new Image(); img_b[5].src = "images/menu_sisetu.gif"
img_b[6] = new Image(); img_b[6].src = "images/menu_map.gif"
img_b[7] = new Image(); img_b[7].src = "images/menu_rec.gif"
img_b[8] = new Image(); img_b[8].src = "images/menu_cont.gif"
img_b[9] = new Image(); img_b[9].src = "images/menu_album.gif"

img_b[11]= new Image(); img_b[11].src= "images/menu_home_ov.gif"
img_b[12]= new Image(); img_b[12].src= "images/menu_hoiku_ov.gif"
img_b[13]= new Image(); img_b[13].src= "images/menu_day_ov.gif"
img_b[14]= new Image(); img_b[14].src= "images/menu_event_ov.gif"
img_b[15]= new Image(); img_b[15].src= "images/menu_sisetu_ov.gif"
img_b[16]= new Image(); img_b[16].src= "images/menu_map_ov.gif"
img_b[17]= new Image(); img_b[17].src= "images/menu_rec_ov.gif"
img_b[18]= new Image(); img_b[18].src= "images/menu_cont_ov.gif"
img_b[19]= new Image(); img_b[19].src= "images/menu_album_ov.gif"

}

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

function B_out(nam,num){
if(NN3 || NN4 || IE4) document.images[nam].src = img_b[num].src;
return false;
}