Dragstop on JQuery

Question

Im using JQuery for recognizing dragstart and dragstop. The dragstart event is working perfectly but the dragstop event doesn't. Here is the code i wrote-

$('img').on('dragstart', function (event) {
	$(function() {		      
            $("#toolbar").animate({width:'toggle'},0);      
		});
		
});
$('img').on('dragstop', function (event) {
		alert("hi");	
});

Thanks.