function leftTrim(value) {

	var exp = /\s*((\S+\s*)*)/;	
	return value.replace(exp, "$1");	
}

function rightTrim(value) {

	var exp = /((\s*\S+)*)\s*/;
	return value.replace(exp, "$1");
}

function trim(value) {

	return leftTrim(rightTrim(value));	
}