jQuery.fn.multiSelect = function(e, f) {
	if (typeof f == "string")
		f = {
			trigger : "#" + f
		};
	f = $.extend({
		trigger : null,
		autoSubmit : true,
		beforeMove : null,
		afterMove : null
	}, f);
	var g = this;
	if (f.autoSubmit)
		this.parents("form").submit(function() {
			selectChildOptions(g)
		});
	var h = function() {
		moveOptions(g, e, f.beforeMove, f.afterMove)
	};
	this.dblclick(h);
	if (f.trigger)
		jQuery(f.trigger).click(h);
	return this;
	function moveOptions(a, b, c, d) {
		if (c && !c())
			return;
		jQuery("option:selected", a).each(function() {
			jQuery(this).attr("selected", false).appendTo(b)
		});
		d && d()
	}
	function selectChildOptions(a) {
		a.children("option").each(function() {
			this.selected = true
		})
	}
};