function initPage(){
	var _gallery = ".gallery-content";
	var _leftArrow = ".prev";
	var _rightArrow = ".next";
	//var _step = 405;
	var _duration = 1800;
	var _liPadding = 12;
	
	var _gWidth = $(_gallery).width() + _liPadding ;
	var _liWidth = $(_gallery+" li").width() + _liPadding;
	var _liSum = $(_gallery+" li").length * _liWidth;
	var _margin = 0;
	var f = 0;
	
	//_step = _gWidth;
	_step = 480;
	
	$(_rightArrow).click(function(){
		if (_liSum - _gWidth  <= _margin + _step) {
				if (f == 0) {
					_margin = _liSum - _gWidth
					f = 1;
				} else {
					_margin = 0;
					f = 0
				}
			}
		else _margin = _margin + _step;
		$(_gallery+" ul").animate({marginLeft: -_margin+"px"}, {queue:false,duration:_duration });
		return false;
	});
	$(_leftArrow).click(function(){
			_margin = _margin - _step;
			if (_margin < 0) _margin = 0;
			$(_gallery + " ul").animate({
				marginLeft: -_margin + "px"
			}, {
				queue:false, duration: _duration
			});
		return false;
	});
	

}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);