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function update_height()
{
	var page_height = $(document).height();
	$('#content').css('min-height',page_height-325);
	$('#left_menu').css('height',page_height-74);
	$('#top_menu').css('width',$(window).width());
	return;
}
function search_box(e)
{
	if (!$('#top_search_query').val().length && e.type == 'blur')
	{
		$('#top_search_query').val('Author/Title/ISBN');
	}
	else if ($('#top_search_query').val() == 'Author/Title/ISBN' && e.type == 'focus')
	{
		$('#top_search_query').val('');
	}
	return;
}

function quantity(product_id, modify)
{
	var quantity = parseInt($('#product_quantity_' + product_id).val()), modify = parseInt(modify);
	if (quantity + modify <= 0)
	{
		return;
	}
	$('#product_quantity_' + product_id).val(quantity+modify);
	return;
}

function paypal_popup()
{
	var popup = window.open( 'https://www.paypal.com/cgi-bin/webscr','paypal','width=950,height=750');
	if (window.focus)
	{
		popup.focus();
	}
	return;
}

function paypal_cart()
{
	var popup, url = 'https://www.paypal.com/cgi-bin/webscr';
	url += '?cmd=_cart';
	url += '&business=5A4KAEPC5V63G';
	url += '&display=1';
	url += '&shopping_url='+window.location.href;
	popup = window.open(url,'paypal','width=950,height=750');
	if (window.focus)
	{
		popup.focus();
	}
	return;
}

function paypal_checkout()
{
	paypal_cart();
	return;
}

function change_postage()
{
	$('#postage_change').css('display', ($('#postage_change').is(':visible')) ? 'none' : 'block');
	$('#postage_change').bind('click', function () { change_postage(); } );
	return;
}

function na()
{
	return;
}

function email_show()
{
	if ($('#email_show').length)
	{
		var reveal_text = '(click to reveal&hellip;)';
		var email = 'contact@'+window.location.href.replace(/([^\/]+)([\/]{2})([w]{3}\.)?([^\/]+)\/.*/i,'$4');
		var subject = ($('#contact_subject').length) ? $('#contact_subject').val().replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/\*/g, '%2A'): '';
		$('#email_show').html(reveal_text);
		$('#email_show').bind('click',function () {
			if ($(this).html().substr(0,6) == reveal_text.substr(0,6))
			{
				$(this).html('').hide().html('<a href="mailto:Revolutionary%20Books%20&lt;'+email+'&gt;?subject='+subject+'" title="Email us!">'+email+'</a>').fadeIn();
			}
		} );
	}
}

function analytics()
{
	return;
}

function facebook_like()
{
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	var js, fjs = d.getElementsByTagName(s)[0];
	if (d.getElementById(id)) return;
	js = d.createElement(s); js.id = id;
	js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1";
	fjs.parentNode.insertBefore(js, fjs);
	}(document, 'script', 'facebook-jssdk'));
}

$(document).ready(function() {
	update_height();
    $('#preview_image a').fancyZoom({closeOnClick: true});
	$('#top_search_query').bind('focus blur',function (e) { search_box(e); } );
	facebook_like();
	analytics();
	email_show();
})
$(window).resize(function() {
	update_height();
});

var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-27546012-1']);
_gaq.push(['_trackPageview']);
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})();