<!--

function verchk(){

  var vermsg = "このぺ－ジはなるべくNetscape4,IE4以上のブラウザでご覧いただくことをお勧めします"
  var isNN=(navigator.appName=="Netscape")
  var isIE=(navigator.userAgent.indexOf("MSIE")!=-1)
  var ver = navigator.appVersion.charAt(0)

  if( isNN && ver >= 4
  ||
      isIE && ver >= 4
  ){}else{alert(vermsg)}

}
verchk()

//--> 
                       
<!--
if(navigator.appVersion.charAt(0) >= "3") {
	var img = new Array();
	img[0] = new Image();  img[0].src = "images/menu/menu_serch.gif";
	img[1] = new Image();  img[1].src = "images/menu/menu_serch_over.gif";
	img[2] = new Image();  img[2].src = "images/menu/menu_urara.gif";
	img[3] = new Image();  img[3].src = "images/menu/menu_urara_over.gif";
	img[4] = new Image();  img[4].src = "images/menu/menu_kodawari.gif";
	img[5] = new Image();  img[5].src = "images/menu/menu_kodawari_over.gif";
	img[6] = new Image();  img[6].src = "images/menu/menu_ivent.gif";
	img[7] = new Image();  img[7].src = "images/menu/menu_ivent_over.gif";
	img[8] = new Image();  img[8].src = "images/menu/menu_label.gif";
	img[9] = new Image();  img[9].src = "images/menu/menu_label_over.gif";
	img[10] = new Image();  img[10].src = "images/menu/menu_link.gif";
	img[11] = new Image();  img[11].src = "images/menu/menu_link_over.gif";
	img[12] = new Image();  img[12].src = "images/menu/menu_suisui.gif";
	img[13] = new Image();  img[13].src = "images/menu/menu_suisui_over.gif";
	img[14] = new Image();  img[14].src = "images/menu/menu_sakenosakana.gif";
	img[15] = new Image();  img[15].src = "images/menu/menu_sakenosakana_over.gif";
	img[16] = new Image();  img[16].src = "images/menu/menu_kuramoto.gif";
	img[17] = new Image();  img[17].src = "images/menu/menu_kuramoto_over.gif";
	img[18] = new Image();  img[18].src = "images/menu/menu_top.gif";
	img[19] = new Image();  img[19].src = "images/menu/menu_top_over.gif";                                       
}

function _in(nam,num) {
	if(navigator.appVersion.charAt(0) >= "3") {
		document.images[nam].src = img[num].src;
	} else { }
}

function _out(nam,num) {
	document.images[nam].src = img[num].src;
}
//-->