function fnTrim(sString,bLCase){
	var sTrim = fnLTrim(sString);
	sTrim = fnRTrim(sTrim);
	if(bLCase)
		sTrim=sTrim.toLowerCase();
	return sTrim;
}

function fnLTrim(sString){
	while(1){
		if(sString.substring(0, 1) != " ")
			break;
		sString=sString.substring(1, sString.length);
	}
	return sString;
}

function fnRTrim(sString){
	while(1){
		if(sString.substring(sString.length-1,sString.length) != " ")
			break;
		sString=sString.substring(0, sString.length-1);
	}
	return sString;
}

function fnIsEmpty(sString){
  return ((sString == null) || (sString.length == 0))
}