function ChkIsNumber(source,arguments)
{
arguments.IsValid=IsNumeric(arguments.Value);
}
function IsNumeric(sText)
{
var pt="^\d+$";
var ValidChars = "0123456789.";
var IsNumber=true;
var Char;
for (i = 0; i < sText.length && IsNumber == true; i++)
{
Char = sText.charAt(i);
if (ValidChars.indexOf(Char) == -1)
{
IsNumber = false;
}
}
return IsNumber;
}
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