function checkVote(form) {
	if(form.artist.value.length < 1 ){
	   alert("Anna artistin nimi");
	   form.artist.focus();
	   return false ;	
	}
	if(form.song.value.length < 1 ){
	   alert("Anna biisin nimi");
	   form.song.focus();
	   return false ;	
	}
    if(form.nickname.value.length < 1 ){
	   alert("Anna nimimerkkisi");
	   form.nickname.focus();
	   return false ;	
	}
	
}