/* Arrow Init sensator.ru */
function arrowInit()
{
	var timer = null;

	var prevArr = document.createElement('img');
		prevArr.src = '/i/arr-prev.gif';
		prevArr.id = 'arr-prev';
		prevArr.title = 'Прокрутить назад';
		prevArr.onmouseover = function() {
			timer = window.setInterval('mouseScroll(1,20)',50);
		}
		prevArr.onmouseout = function() {
			window.clearInterval(timer);
		}

	var nextArr = document.createElement('img');
		nextArr.src = '/i/arr-next.gif';
		nextArr.id = 'arr-next';
		nextArr.title = 'Прокрутить вперёд';
		nextArr.onmouseover = function() {
			timer = window.setInterval('mouseScroll(-1,20)',50);
		}
		nextArr.onmouseout = function() {
			window.clearInterval(timer);
		}

	var content = document.getElementsByTagName('body')[0];
		content.appendChild(prevArr);
		content.appendChild(nextArr);
}

/* Horiz Scroll */
function mouseScroll(delta,step) {
	if (delta < 0) {
		window.scrollBy(step,0);
	} else {
		window.scrollBy(-step,0);
	}
}

/* Get Mouse Wheel */
function mouseWheel(event){
	var delta = 0;
	if (!event) event = window.event;
	if (event.wheelDelta) {
		delta = event.wheelDelta/60; 
		if (window.opera) delta = -delta;
	} else if (event.detail) {
		delta = -event.detail/3;
	}
	if (delta) {
		mouseScroll(delta,75);
		if (event.preventDefault) event.preventDefault();
		event.returnValue = false;
	}
}

/* Attach Events */
if (window.addEventListener) {
	window.addEventListener('DOMMouseScroll',mouseWheel,false);
}
window.onmousewheel = document.onmousewheel = mouseWheel;