function attiva() {
	
	if (document.Research.dateresearch.checked == false) {
		document.Research.fromDay.disabled=true;
		document.Research.fromMonth.disabled=true;
		document.Research.toDay.disabled=true;
		document.Research.toMonth.disabled=true;
		document.Research.qnt1.disabled=true;
		document.Research.qnt2.disabled=true;
		document.Research.qnt3.disabled=true;
	}
	else {
		document.Research.fromDay.disabled=false;
		document.Research.fromMonth.disabled=false;
		document.Research.toDay.disabled=false;
		document.Research.toMonth.disabled=false;
		document.Research.qnt1.disabled=false;
		document.Research.qnt2.disabled=false;
		document.Research.qnt3.disabled=false;
	}
}