if(navigator.appVersion.charAt(0) >= 3) {
         var img = new Array();

 img[5] = new Image();  
img[5].src = "btn/menu05.jpg";
 img[6] = new Image();  
img[6].src = "btn/menu06.jpg";
 img[7] = new Image();  
img[7].src = "btn/menu07.jpg";
 img[8] = new Image();  
img[8].src = "btn/menu08.jpg";
 img[9] = new Image();  
img[9].src = "btn/menu09.jpg";
 img[10] = new Image();  
img[10].src = "ex_image/gakkai_a.gif";

 img[15] = new Image();  
img[15].src = "btn/menu05b.jpg";
 img[16] = new Image();  
img[16].src = "btn/menu06b.jpg";
 img[17] = new Image();  
img[17].src = "btn/menu07b.jpg";
 img[18] = new Image();  
img[18].src = "btn/menu08b.jpg";
 img[19] = new Image();  
img[19].src = "btn/menu09b.jpg";
 img[110] = new Image();  
img[110].src = "ex_image/gakkai_b.gif";

window.onerror = null;
}

function _in(nam,num) {
         if(navigator.appVersion.charAt(0) >= 3) {
                document.images[nam].src = img[num].src;
        }
}

function _out(nam,num) {
document.images[nam].src = img[num].src;
}