function isNumber(inputVal)
{
 oneDecimal = false;
 inputStr = "" + inputVal;
 for(var i = 0; i<inputStr.length;i++)
 {
  var oneChar = inputStr.charAt(i)
  if(oneChar=="." && !oneDecimal)
  {
   oneDecimal = true
   continue
  }
if(oneChar < "0" || oneChar > "9")
  {
   return false
  }
 }
 return true
}

function isNumber2(inputVal)
{
 oneDecimal = false;
 inputStr = "" + inputVal;
 for(var i = 0; i<inputStr.length;i++)
 {
  var oneChar = inputStr.charAt(i)
  if(oneChar=="." && !oneDecimal)
  {
   oneDecimal = true
   continue
  }
 if(oneChar == " ")
  {
   continue
  }
  if(oneChar < "0" || oneChar > "9")
  {
   return false
  }
 }
 return true
}