browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 

if (browser_name == "Netscape" && browser_version >= 3.0) { roll = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 3.0) { roll = 'true'; }
else { roll = 'false'; }
function msover(img,ref) { if (roll == 'true' && preLoadFlag == 'true') { document.images[img].src = ref; } }
function msout(img,ref)  { if (roll == 'true' && preLoadFlag == 'true') { document.images[img].src = ref; } }

//-->

var imgslist = new Array(
// 0
"/common/images/menu/buispost_menu_02.gif",
"/common/images/menu/buispost_menu_02-over.gif",
// 2
"/common/images/menu/buispost_menu_03.gif",
"/common/images/menu/buispost_menu_03-over.gif",
// 4
"/common/images/menu/buispost_menu_04.gif",
"/common/images/menu/buispost_menu_04-over.gif",
// 6
"/common/images/menu/buispost_menu_06.gif",
"/common/images/menu/buispost_menu_06-over.gif",
// 8
"/common/images/menu/buispost_menu_07.gif",
"/common/images/menu/buispost_menu_07-over.gif",
// 10
"/common/images/menu/buispost_menu_08.gif",
"/common/images/menu/buispost_menu_08-over.gif",
// 12
"/common/images/menu/buispost_menu_09.gif",
"/common/images/menu/buispost_menu_09-over.gif",
// 14
"/common/images/menu/buispost_menu_10.gif",
"/common/images/menu/buispost_menu_10-over.gif",
// 16
"/common/images/menu/buispost_menu_11.gif",
"/common/images/menu/buispost_menu_11-over.gif",
// 18
"/common/images/menu/buispost_menu_12.gif",
"/common/images/menu/buispost_menu_12-over.gif",
// 20
"/common/images/menu/buispost_menu_13.gif",
"/common/images/menu/buispost_menu_13-over.gif",
// 22
"/common/images/header/buispost_header_07.gif",
"/common/images/header/buispost_header_07-over.gif",
// 24
"/common/images/header/buispost_header_10.gif",
"/common/images/header/buispost_header_10-over.gif"
);

var imgs=new Array();
var preLoadFlag = 'false';
if (document.images) {
 for (x=0; x<imgslist.length; x++)
  {imgs[x]=new Image(); imgs[x].src = imgslist[x];}
 preLoadFlag = 'true';
}