function doBM(bservice) {

	bmurl = encodeURIComponent('http://www.humanoptics.com');

	bmtitle = encodeURIComponent('humanoptics.com | Cataract, Intraocular lenses, Astigmatism, Erlangen');

	switch(bservice) {		

		case 'delicious':

			window.open('http://del.icio.us/post?url='+bmurl+'&title='+bmtitle);

			break;

		case 'yahoo':

			window.open('http://bookmarks.yahoo.com/');

			break;

		case 'facebook':	

			window.open('http://www.facebook.com/');

			break;

    case 'google':	

			window.open('http://fusion.google.com/add?feedurl=http://www.humanoptics.com');

			break;

	}	

}