function valida_ricerca(){
	
	if(document.forms[2].media.value == 0){
		alert('Selezionare un media'); 
		return false;
	}else
	   return true;
}

function del_commenti(){
	var form = document.getElementById('pubblica');
	
	var url = 'elimina_commento.php?'
	var checked = 0;
	for(i = 0; i < form.length; i++){
		if(form.elements[i].type == 'checkbox')	
			if(form.elements[i].checked){
				if(checked == 0)
					url = url+"id_commento[]="+form.elements[i].value;
				else
					url = url+"&id_commento[]="+form.elements[i].value;	
				
					checked++;	
			}
	}		
	alert(url);
	location.replace(url);	
	
	return false;
}