function CompartilheTwitter(url,msg){

	texto = msg.substr(0, (137));
	
	if(msg.length >140){
		texto = texto+'...';
	}
	window.open("http://twitter.com/intent/tweet?source=webclient&text="+encodeURIComponent(msg)+" "+encodeURIComponent(url),"sharer","toolbar=0,status=0,width=626,height=436");

}
function CompartilheFacebook(url,msg){
	window.open("http://www.facebook.com/sharer.php?u="+encodeURIComponent(url)+"&t="+encodeURIComponent(msg),"sharer","toolbar=0,status=0,width=626,height=436");
}
function CompartilheOrkut(url,msg){
	window.open("http://promote.orkut.com/preview?nt=orkut.com&du="+encodeURIComponent(url)+"&ctx=share&tt="+encodeURIComponent(msg),"sharer","toolbar=0,status=0,width=626,height=436");
}