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
		})
	}
};