function rigaVisibile(selectTr) {

	//alert("divTr_"+selectTr);
  
  /*
  	var a=document.getElementById('divTr_'+selectTr);
    a.style.display = 'block'; 
	document.getElementById("divTr_"+selectTr).style.visibility = "visible";
    */
    
  var el = document.getElementById("divTr_"+selectTr);
	if ( el.style.display != "none" ) {
		el.style.display = 'none';
	}
	else {
		el.style.display = '';
	}
  
}