function bookmarkpage() {
	var IE = navigator.appName.match(/(Microsoft Internet Explorer)/gi),
    	NS = navigator.appName.match(/(Netscape)/gi),
    	OP = navigator.appName.match(/(Opera)/gi)

    if(IE && document.uniqueID){
	window.external.AddFavorite(location.href,document.title);
    }
    else if(OP || IE && !document.uniqueID){
	alert('Your '+RegExp.$1+' browser requires that you\nPress Ctrl & T to Bookmark this page.');
    }
    else if(NS){
        alert('Your '+RegExp.$1+' browser requires that you\nPress Ctrl & D to Bookmark this page.');
    }

}