ConfirmIt Number validation using percentages and decimals

Checks if the provided answer is in the following format: 00,00. The maximum value is 99,99.

//surveyscripting.com

function PercentageDecimal(qid)
{
	var sText = f(qid).get();
	var ValidChars = "0123456789,";
	var Char : String = '';
	var comma : int = 0;
	var predi : int = 0;
	var broq : int = 0;
	var test : Boolean = true;
	var IsNumber = true;

	if (sText != '100' ) {
		for (var i = 0; i < sText.length; i++)
		{
		  Char = sText.charAt(i);
		  if ( test == false ) { broq++; }
		  if ( Char == ',' ) { comma++; test = false; }
		  if ( test == true ) { predi++; }
		}

		if ((predi < 0 || predi > 2) || (broq < 0 || broq > 2) || comma > 1)
		{
			RaiseError();
			SetQuestionErrorMessage(CurrentLang(), 'Please verify your answers.');
		}
		if (broq < 0 || broq > 99)
		{
			RaiseError();
			SetQuestionErrorMessage(CurrentLang(), 'Please verify your answers.');
		}
		if (comma > 1)
		{
			RaiseError();
			SetQuestionErrorMessage(CurrentLang(), 'Please verify your answers.');
		}
		else
		{
			for (var i = 0; i < sText.length && IsNumber == true; i++) 
			{
				Char = sText.charAt(i); 
				if (ValidChars.indexOf(Char) == -1) 
				{
					IsNumber = false;
					RaiseError();
					SetQuestionErrorMessage(CurrentLang(),
					'Please use only numbers and "," for a decimal character.');
				}
			}
		}
	}
}