$(document).ready(function() {

	var content_width = $('#frontpage_promos_widget_content').width();
	var incr =  ( $('#frontpage_promos_widget_content .node-type-home-promo').width() *1) + ( $('#frontpage_promos_widget_content .node-type-home-promo').css("margin-left").replace("px", "") *1)  +4 ;
	var display_width = 729;
	checkEnable();


$('#frontpage_promos_widget_button_left a').click(function() {
	var pos = $('#frontpage_promos_widget_content').position();
	var left = pos.left;
//	if (left < 2 ) {
	if ( $('#frontpage_promos_widget_button_left img').css('opacity') == 1 ) {
		$('#frontpage_promos_widget_content').animate({
			left: '+='+incr+'px'
		}, 1000, function() {
			checkEnable();
		});
	}
	return false;
});
$('#frontpage_promos_widget_button_right a').click(function() {
	var pos = $('#frontpage_promos_widget_content').position();
	var left = pos.left;
//	alert('incr:'+incr);
//	if (display_width - content_width +2 != left ) {
	if ( $('#frontpage_promos_widget_button_right img').css('opacity') == 1 ) { 
		$('#frontpage_promos_widget_content').animate({
			left: '-='+incr+'px'
		}, 1000, function() {
			checkEnable();
		});
	}
	return false;
});


function checkEnable() {
	var pos = $('#frontpage_promos_widget_content').position();
	var left = pos.left;
	if (left >=0 ) {
		$('#frontpage_promos_widget_button_left img').css({
			'opacity' : .7,
			'cursor' : 'default'
		});
	} else {
		$('#frontpage_promos_widget_button_left img').css({
			'opacity' : 1,
			'cursor' : 'pointer'
		});
	}
//	alert('content_pos.left:'+left+' display_width:'+display_width+' content_width:'+content_width);
	if (display_width - content_width >= left - 1 ) {
		$('#frontpage_promos_widget_button_right img').css({
			'opacity' : .7,
			'cursor' : 'default'
		});
	} else {
		$('#frontpage_promos_widget_button_right img').css({
			'opacity' : 1,
			'cursor' : 'pointer'
		});
	}
}

});