function toggleDetails(event) {
    var detailsid = event.data

    button = $(detailsid+" .showhide_button")
    button.text(
	button.text() == "Show details" ? "Hide details" : "Show details"
    );

    $(detailsid+">.hidden_details").slideToggle(750)

    return false;
}

$( function() {
    $(".details").each(function(index, elem) {
	var detailsid = "#" + elem.id
	$(detailsid+" .showhide_button").click(detailsid, toggleDetails)
	$(detailsid+" .showhide_button").text("Show details")
	$(detailsid+">.hidden_details").hide(0)
    })
})