function share_this(to)
{
	var href = encodeURIComponent(window.document.location.href);
	var title = encodeURIComponent(window.document.title);
	
	switch(to)
	{
		case 'meneame' :
			url = 'http://meneame.net/submit.php?url='+href;
			break;
			
		case 'digg' :
			url = 'http://digg.com/submit?phase=2&url='+href+'&title='+title;
			break;
			
		case 'delicious' :
			url = 'http://del.icio.us/post?url='+href+'&title='+title;
			break;
			
		case 'technorati' :
			url = 'http://www.technorati.com/faves?add='+href;
			break;
			
		case 'yahoo' :
			url = 'http://myweb2.search.yahoo.com/myresults/bookmarklet?u='+href+'&t='+title+'&ei=UTF-8';
			break;
					
		case 'fresqui' :
			url = 'http://tec.fresqui.com/post?url='+href+'&title='+title;
			break;		
			
		case 'wikio' :
			url = 'http://www.wikio.es/vote?url='+href;
			break;	
			
		case 'barrapunto' :
			url = 'http://barrapunto.com/submit.pl?story='+href;
			break;		
	}
	win = window.open(url,'ShareThisPopup','scrollbars=yes,menubar=yes,location=yes,toolbar=yes,resizable=yes,width=790,height=500,left=5,top=5');
	if(!win){
		alert('Es necesario desactivar el Pop-up Blocker o bloqueador de ventanas emergentes de su navegador');
	}
}