function bookmark() {
	var ver=navigator.appName;
	var num=parseInt(navigator.appVersion);
	if(ver=='Netscape') {
		alert('Press CTRL+D to bookmark this page');
	} else if((ver=='Microsoft Internet Explorer')&&(num>=4)) {
		window.external.AddFavorite(siteurl,sitetitle);
	} else if(document.all) {
		window.external.AddFavorite(siteurl,sitetitle);
	} else if(window.sidebar) {
		window.sidebar.addPanel(sitetitle,siteurl,'');
	} else if(window.opera && window.print) {
		return true;
  }
}