function StringTrim(sString)
{
	var sTrimString
	var nLength
	var iFirstChar
	var iLastChar
	
	sTrimString="";
	nLength=sString.length;
	
	if (nLength==0){
		return sTrimString;
	}
	
	for (iFirstChar = 0; iFirstChar< nLength; iFirstChar++){
		if (sString.charAt(iFirstChar) != " ") {
			break;
		}
	}
	for (iLastChar = nLength-1; iLastChar >= 0; iLastChar--){
		if (sString.charAt(iLastChar) != " ") {
			break;
		}
	}
	if (iLastChar >= iFirstChar) {
		sTrimString=sString.substr(iFirstChar, iLastChar-iFirstChar+1);
	}
	return sTrimString;
	
}