// THIS FILE REQUIRES "trim_str.js"

  function isPasswordValid(strPassword)
  {
    var strPasswordTrimmed;

    // TRIM SPACES FROM ADDRESS
    strPasswordTrimmed = trim(strPassword);

    // VALIDATE FIRST AND SUBSEQUENT LETTERS
    var bolAtSign = false;
    var char1 = strPasswordTrimmed.charAt(0);

    if (!((char1 >= "a" && char1 <= "z") || (char1 >= "A" && char1 <= "Z")))
    {
       return false;
    }

    for (i=1; i < strPasswordTrimmed.length; i++)
    {
      char1 = strPasswordTrimmed.charAt(i);
      if (!((char1 >= "a" && char1 <= "z") || (char1 >= "A" && char1 <= "Z") || (char1 >= "0" && char1 <= "9")))
      {
         return false;
      }
    }

    return true;
  }