// JavaScript Document

var Netscape, MSIE, Opera, Unknown;
var Win, Mac, Other;
var NetscapeVer, MSIEVer, OperaVer;

Netscape = navigator.appName == "Netscape";
MSIE = navigator.appName == "Microsoft Internet Explorer";
Opera = navigator.userAgent.indexOf("Opera") > -1;
Unknown = !(Netscape || MSIE || Opera);

Win = navigator.userAgent.indexOf("Win") > -1;
Mac = navigator.userAgent.indexOf("Mac") > -1;
Other = !(Win || Mac);

if(Netscape) {
NetscapeVer = parseFloat(navigator.appVersion);
}
else if(MSIE) {
n = navigator.userAgent;
MSIEVer = n.substr(n.indexOf("MSIE ")+("MSIE ").length, 4);
MSIEVer = parseFloat(MSIEVer); 

if(Opera) {
  OperaVer = n.substr(n.indexOf("Opera ")+("Opera ").length, 4);
  OperaVer = parseFloat(OperaVer);
}
}

function bookmark() {
if(Opera) {
alert("Press Ctrl+T to bookmark this site!");
}
else if(Win && MSIE && MSIEVer >= 5) {
window.external.AddFavorite(
  'http://www.ronwillemsphoto.com', 
  'Ron Willems Photo');
}
else {
alert("Press Ctrl+D to bookmark this site!");
}
}