function getElementsByClassName(node, name, tag) {
	var classElements = new Array();
	var elements = node.getElementsByTagName(tag);
	var elementsLength = elements.length;
	var class = new RegExp("\\b" + name + "\\b");
	for (i = 0, j = 0; i < elementsLength; i++) {
		if (class.test(elements[i].className)) {
			classElements[j] = elements[i];
			j++;
		}
	}
	return classElements;
}

function rollOver(element) {
	if (element == "home") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -22px";
	}
	else if (element == "parents") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -44px";
	}
	else if (element == "children") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -66px";
	}
	else if (element == "teachers") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -88px";
	}
}

function rollOut() {
	var current = getElementsByClassName(document, "current", "li");
	if (current[0].id == "home") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -22px";
	}
	else if (current[0].id == "parents") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -44px";
	}
	else if (current[0].id == "children") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -66px";
	}
	else if (current[0].id == "teachers") {
		document.getElementById("second-menu").style.backgroundPosition = "0px -88px";
	}

}

window.onload = rollOut;