if(navigator.appVersion.charAt(0) >= 3) {
        var img = new Array();
        img[0] = new Image(); img[0].src = "images/common/tab_menu01.gif";
        img[1] = new Image(); img[1].src = "images/common/tab_menu02.gif";

        img[2] = new Image(); img[2].src = "images/common/tab_menu03.gif";
        img[3] = new Image(); img[3].src = "images/common/tab_menu04.gif";
		
		img[4] = new Image(); img[4].src = "images/common/tab_menu05.gif";
        img[5] = new Image(); img[5].src = "images/common/tab_menu06.gif";
		
		img[6] = new Image(); img[6].src = "images/common/tab_menu07.gif";
        img[7] = new Image(); img[7].src = "images/common/tab_menu08.gif";
		
		img[8] = new Image(); img[8].src = "images/common/tab_menu09.gif";
        img[9] = new Image(); img[9].src = "images/common/tab_menu10.gif";
		
		img[10] = new Image(); img[10].src = "images/top/main_btn01.gif";
        img[11] = new Image(); img[11].src = "images/top/main_btn02.gif";
		
		img[12] = new Image(); img[12].src = "images/top/main_btn01.gif";
        img[13] = new Image(); img[13].src = "images/top/main_btn02.gif";
		
		img[14] = new Image(); img[14].src = "images/top/main_btn01.gif";
        img[15] = new Image(); img[15].src = "images/top/main_btn02.gif";
}
function change_image(nam,num) {
        if(navigator.appVersion.charAt(0) >= 3) {
                document.images[nam].src = img[num].src;
        }
}