function addClass(target, classValue) {
	if (!hasClass(target, classValue)) {
		if (target.className == "") {
			target.className = classValue;
		} else {
			target.className += " " + classValue;
		}
	}
	return true;
};




function removeClass(target, classValue) {
	var removedClass = target.className;
	var pattern = new RegExp("(^| )" + classValue + "( |$)");
	removedClass = removedClass.replace(pattern, "$1");
	removedClass = removedClass.replace(/ $/, "");
	target.className = removedClass;
	return true;
};




function hasClass(target, classValue) {
	var pattern = new RegExp("(^| )" + classValue + "( |$)");
	if (target.className.match(pattern)) {
		return true;
	}
	return false;
};




function getInnerText(target) {
	var text = target.firstChild;
	while (text.nodeValue.match(/^\s*$/)) {
		text = text.nextSibling;
	}
	textString = text.nodeValue.replace(/^\W*(.*\w)\W*$/, "$1");
	return textString;
};


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;
};