function hide(objName) {
	obj = document.getElementById(objName);
	obj.style.display = 'none';

}

function show(objName) {
	obj = document.getElementById(objName);
	obj.style.display = 'block';
}

function trim(sString) {
	while (sString.substring(0,1) == ' ') {
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ') {
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}