function PledgeDetail(pledgeType)
{
    var bSrc, dSrc;
    bSrc = document.getElementById("pledgeBirdie");
    dSrc = document.getElementById("pledgeDonation");
    ptbl = document.getElementById("PledgeTable");
    
    if(pledgeType=="Birdie")
    {
        bSrc.style.display = "block";
        ptbl.style.display = "block";
        dSrc.style.display = "none";
    }
    else
    {
        bSrc.style.display = "none";
        ptbl.style.display = "none";
        dSrc.style.display = "block";
    }
}

// calculate the ASCII code of the given character
function CalcKeyCode(aChar) {
  var character = aChar.substring(0,1);
  var code = aChar.charCodeAt(0);
  return code;
}

function checkNumber(val, def) {
  var strPass = val.value;
  var strLength = strPass.length;
  var lchar = val.value.charAt((strLength) - 1);
  var cCode = CalcKeyCode(lchar);
  var isGood = false;
  

  /* Check if the keyed in character is a number
     do you want alphabetic UPPERCASE only ?
     or lower case only just check their respective
     codes and replace the 48 and 57 */

  if (cCode < 48 || cCode > 57 ) {
    var myNumber = val.value.substring(0, (strLength) - 1);
    //val.value = myNumber;
    val.value = def;
  }
      
  return false;
}