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 imgW = new Array();
imgW[10] = new Image(); imgW[10].src = "../image/menu/wobtn01.gif";
imgW[11] = new Image(); imgW[11].src = "../image/menu/wobtn01r.gif";
imgW[20] = new Image(); imgW[20].src = "../image/menu/wobtn02.gif";
imgW[21] = new Image(); imgW[21].src = "../image/menu/wobtn02r.gif";
imgW[30] = new Image(); imgW[30].src = "../image/menu/wobtn03.gif";
imgW[31] = new Image(); imgW[31].src = "../image/menu/wobtn03r.gif";
imgW[40] = new Image(); imgW[40].src = "../image/menu/wobtn04.gif";
imgW[41] = new Image(); imgW[41].src = "../image/menu/wobtn04r.gif";
}

function Wix(num,nam) {
if(NN3 || NN4 || IE4) {
              box=num*10+nam;
              document.images["W"+num].src = imgW[box].src;
              }
}