// JavaScript Document


function abilitaRiv() {
  
     
     if( document.getElementById('perc').disabled ==true){

     document.getElementById('perc').disabled =false;
	 }
         
     else {document.getElementById('perc').disabled =true;
	 document.getElementById('perc').value="Percentuale Sconto";}
        
    }


function abilitaAss() {

     
      if( document.getElementById('percass').disabled ==true){

      document.getElementById('percass').disabled =false;}
         
      else {document.getElementById('percass').disabled =true;
	  document.getElementById('percass').value="Percentuale Sconto";}
        

     }