function gethashvalue() // Set transaction values for posting to Authorize.net
   {  
   var MyDonationAmount
   var MyAPILoginID
   var MyCurrentTransactionKey
   var MyRandomNumber
   var MyHashValue
   var MyTimeStamp   
   
   // Get Logon Data
   MyAPILoginID = GetAPILogon()
   MyCurrentTransactionKey = GetTransactionKey()
    
   MyDonationAmount = document.getElementById("x_amount").value
   MyRandomNumber = document.getElementById("x_fp_sequence").value    
   
   // Get Time Stamp
   MyTimeStamp = GetSecondsSince1970 ();
   
   // Get transaction Hash Value   
   MyHashValue = InsertFP (MyAPILoginID, MyCurrentTransactionKey, MyDonationAmount, MyRandomNumber, MyTimeStamp);
      
   // assign values to form
   document.forms[1].x_login.value = MyAPILoginID; 
   document.forms[1].x_fp_hash.value = MyHashValue;     
   document.forms[1].x_fp_sequence.value = MyRandomNumber;  
   document.forms[1].x_fp_timestamp.value = MyTimeStamp;  
  
  }