var strEmpty = "";

<!----------------------------------------------------------------> 
<!-- Trim functions                                             -->
<!---------------------------------------------------------------->
<!-- Left Trim function                                         -->
<!---------------------------------------------------------------->

function left_trim(strToTrim){
	strTrimmed = strToTrim;
	bolTrim = true;

	if (strTrimmed.length != 0)
		while(bolTrim){
			intIndex = strTrimmed.indexOf(" ");
			if (intIndex == 0)
				strTrimmed = strTrimmed.substr(intIndex+1);
			else
				bolTrim = false;	 
		}
	return strTrimmed;
}

<!---------------------------------------------------------------->
<!-- Right Trim function                                        -->
<!---------------------------------------------------------------->

function right_trim(strToTrim){
	strTrimmed = strToTrim;
	bolTrim = true;
	
	if (strTrimmed.length != 0)
		while(bolTrim){
			intIndex = strTrimmed.lastIndexOf(" ");
			if (intIndex == strTrimmed.length-1)
				strTrimmed = strTrimmed.substring(0, intIndex);
			else
				bolTrim = false;	 
		}	
	return strTrimmed;
}

<!---------------------------------------------------------------->
<!-- Trim function (Left + Right Trim)                          -->
<!---------------------------------------------------------------->

function trim(strToTrim){
	strTrim = strToTrim;
	strTrim = left_trim(strTrim);
	strTrim = right_trim(strTrim);
	return strTrim;
}