// Toggles the visibility of a specified target element.
// @target: The target element.
// @eventSource: The source of the invoking event.
// Remarks: uses the JQuery library.
function toggle(target, eventSource) {
	$(document).ready(function() {
		$(target).slideToggle("medium", function() {
			if ($(eventSource).attr("class") != "toggler1") {
				// The target element has been toggled off.
				$(eventSource).removeClass("toggler0");
				$(eventSource).addClass("toggler1");
			} else {
				// The target element has been toggled on.
				$(eventSource).removeClass("toggler1");
				$(eventSource).addClass("toggler0");
			}
		});
	});
}