function socialBook(type,author) {
	url=encodeURIComponent(location.href);
	title=encodeURIComponent(document.title);
	
	switch(type) {
		case 'delicious':
			window.open('http://del.icio.us/post?url='+url+'&title='+title);
			break;
		case 'facebook':
			window.open('http://www.facebook.com/sharer.php?u='+url+'&t='+title);
			break;
		case 'misterwong':
			window.open('http://www.mister-wong.de/index.php?action=addurl&bm_url='+url+'&bm_description='+title);						 
			break;
		case 'google':
			window.open('http://www.google.com/bookmarks/mark?op=add&hl=de&bkmk='+url+'&title='+title);
			break;
		case 'linkarena':
			window.open('http://linkarena.com/bookmarks/addlink/?url='+url+'&title='+title);
			break;
		case 'yigg':
			window.open('http://yigg.de/neu?exturl='+url+'&exttitle='+title);
			break;
		case 'twitter':
			window.open('http://twitter.com/home?status='+url);
			break;
		case 'studivz':
			window.open('http://www.studivz.net/Suggest/Selection/?u='+url+'&desc='+title+'&prov='+author);
			break;
	}
}