function bookm() {

//This code is for Firefox 
if(navigator.userAgent.indexOf("Firefox")!=-1)
		{document.write("<span > [ BOOKMARK this page - use CTRL-D] </span>");}
 
else
//This code is for IE v4 or better
	if (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion >= "4.0")
	{document.write("<span onClick='window.external.AddFavorite(location.href, document.title);'> [ BOOKMARK this page ] </span>")}

	else
//This code is for Netscape v4.7 or better
		if (navigator.appName=="Netscape" && parseFloat(navigator.appVersion)>=4.7)
		{document.write("<span onClick='window.external.AddFavorite(location.href, document.title);'> [ BOOKMARK this page ] </span>")}
		else
//This code posts text if not
			{document.write("[ BOOKMARK this page - use CTRL-D ]");}
}