function isNN4(){return (null!=document.layers)}
function isOpera(){return (navigator.userAgent.toLowerCase().indexOf("opera")!=-1)}
function isNN6(){return (navigator.userAgent.toLowerCase().indexOf("mozilla/5")!=-1)}
function isIE5(){return (navigator.appVersion.toLowerCase().indexOf("msie 5")!=-1)}
function isWebTV(){return (navigator.appName.toLowerCase().indexOf("webtv")!=-1)}
gbNN4=isNN4();
gbIE5=isIE5();
gbNN6=isNN6();
gbOpera=isOpera();
gbDom=(gbNN6||gbIE5||gbOpera);
gbIE4=(!(gbDom||gbNN4));

//-----------------------------------------------------------------------------

var win = null;
function NewWindow(mypage,myname,w,h,scroll){
LeftPosition = (screen.width) ? (screen.width-w)/2.5 : 0;
TopPosition = (screen.height) ? (screen.height-h)/2.5 : 0;
settings =
'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
win = window.open(mypage,myname,settings);
win.focus()
}

//-----------------------------------------------------------------------------
// DHTML menu vars
var st_path="";
var st_lib="stm31.js";