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

bt[1] = new Image();  bt[1].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_greeting_o.gif";
bt[2] = new Image();  bt[2].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_greeting.gif";

bt[3] = new Image();  bt[3].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_profile_o.gif";
bt[4] = new Image();  bt[4].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_profile.gif";

bt[5] = new Image();  bt[5].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_branches_o.gif";
bt[6] = new Image();  bt[6].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_branches.gif";

bt[7] = new Image();  bt[7].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_topics_o.gif";
bt[8] = new Image();  bt[8].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_topics.gif";

bt[9] = new Image();  bt[9].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_individual_o.gif";
bt[10] = new Image();  bt[10].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_individual.gif";

bt[11] = new Image();  bt[11].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_corporate_o.gif";
bt[12] = new Image();  bt[12].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_corporate.gif";

bt[13] = new Image();  bt[13].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_member_o.gif";
bt[14] = new Image();  bt[14].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_member.gif";


bt[15] = new Image();  bt[15].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_contact_o.gif";
bt[16] = new Image();  bt[16].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_contact.gif";

bt[17] = new Image();  bt[17].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_link_o.gif";
bt[18] = new Image();  bt[18].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_link.gif";

bt[19] = new Image();  bt[19].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_recruit_o.gif";
bt[20] = new Image();  bt[20].src ="http://www.ojipaper-hoken.co.jp/common/images/bt_recruit.gif";

bt[21] = new Image();  bt[21].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_individual_o.gif";
bt[22] = new Image();  bt[22].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_individual.gif";
bt[23] = new Image();  bt[23].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_corporate_o.gif";
bt[24] = new Image();  bt[24].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_corporate.gif";
bt[25] = new Image();  bt[25].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_employee_o.gif";
bt[26] = new Image();  bt[26].src ="http://www.ojipaper-hoken.co.jp/images/top_bt_employee.gif";

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