function trim(value)
{ 
    return value.replace(/^\s+|\s+$/g, '');
}

function IsNumeric(sText)
{
    var ValidChars = "0123456789";
    var IsNumber=true;
    var Char;

    if (sText.length == 0)
        return false;

    for (i = 0; i < sText.length && IsNumber == true; i++) 
    { 
        Char = sText.charAt(i); 
        if (ValidChars.indexOf(Char) == -1) 
        {
            IsNumber = false;
        }
    }
    return IsNumber;
}