var transitionspeed = 1000;
var locked = false;
var lastPicture = 4;

$(document).ready(function() {
  $('#portfolio a').lightBox();
  $('a.frame').openDOMWindow({ 
		height:200,
		width:400, 
		borderSize: 1,
		borderColor:'#57849a',
		eventType:'click', 
		windowSource:'iframe', 
		windowPadding:0, 
		loader:0
	});
	
	$('#scroller-leftarrow').bind('click', function(e) {		
		if (parseInt($('#scroller-container').css('marginLeft')) >= 0) {
			return false;
		}
		
		if (locked) {
			return false;
		}
		locked = true;
		setTimeout(function() {locked = false;}, transitionspeed / 2);
		
		$('#scroller-container').animate({'marginLeft': (parseInt($('#scroller-container').css('marginLeft')) + 325) + 'px'});
		// pfeil rechts einblenden
		return false; // prevent default event
	});

	$('#scroller-rightarrow').bind('click', function(e) {
		if (parseInt($('#scroller-container').css('marginLeft')) <= -(325 * lastPicture) + 325) {
			return false;
		}

		if (locked) {
			return false;
		}
		locked = true;
		setTimeout(function() {locked = false;}, transitionspeed / 2);

		$('#scroller-container').animate({'marginLeft': (parseInt($('#scroller-container').css('marginLeft')) - 325) + 'px'});
		// pfeil links einblenden
		return false; // prevent default event
	});
});