// content

var objFeaturebox;
var arrContent;
var curContent;

function btnConst() {
	

	curContent = 0;
	objFeaturebox = ge('bytn');

	arrContent = new Array(objFeaturebox.getElementsByTagName('p').length);

	for (var i = 0; i<arrContent.length; i++) {
		arrContent[i] = objFeaturebox.getElementsByTagName('p')[i].innerHTML;
	}

	attachBytnListeners();
	changeFeatureContent(0);
}


function attachBytnListeners() {
	var objBack = ge('bytnBack');
	var objNext = ge('bytnNext');
	if (window.addEventListener) { // moz
		objBack.addEventListener('click', bytnBack, false);
		objNext.addEventListener('click', bytnNext, false);
	}
	else {
		objBack.attachEvent('onclick', bytnBack);
		objNext.attachEvent('onclick', bytnNext);
	}
}
function bytnBack(e) {
	changeFeatureContent(-1);
}
function bytnNext(e) {
	changeFeatureContent(1);
}
function changeFeatureContent(n) {
	var newIndex;

	newIndex = eval(n + curContent);

	if (newIndex < 0) {
		curContent = eval(arrContent.length - 1);
	}
	else if (newIndex == arrContent.length) {
		curContent = 0;
	}
	else {
		curContent = newIndex;
	}

	objFeaturebox.innerHTML = arrContent[curContent];
}