//Javascript to validate user input at "Trans2.htm" transistor amplifier calculator
//Copyright 2005 by James T. Hawes. All rights reserved.
//This validation script is all new code for ASP.NET version. Created April 9, 2005.
//Last update April 10, 2005.
//
//
function s_validate() 
{ 
  if (document.ampForm.Vcc_f.value == "")
  {
    alert("Can't transmit data. You must first enter a voltage value.");
    return false;
  }
  else if (document.ampForm.Vcc_f.value > 25)
  {
    alert("Can't transmit data. Voltage value must be less than 26.");
    return false;
  }
  else if (document.ampForm.Vcc_f.value < 2)
  {
    alert("Can't transmit data. Voltage value must exceed 2.");
    return false;
  }
  else if (isNaN(document.ampForm.Vcc_f.value))
  {
    alert("Can't transmit data. Voltage value must be a number.");
    return false;
  }
  else
    return true;
}