$(document).ready( function () {
$('.flight').draggable({hoverClass:'.correct'});
$('.airport').droppable({hoverClass:'correct'});
});
Usage: $("selector").hoverClass("className");
Quite frankly, this plug in wouldn't be neccessary, except for the fact that IE doesn't recognize :hover
$(document).ready( function () {
$('.flight').draggable({hoverClass:'correct'});
$('.airport').droppable({hoverClass:'correct'});
$('.airport.lhr').droppable("option", "accept", ".lhr");
$('.airport.ord').droppable("option", "accept", ".ord");
$('.airport.hkg').droppable("option", "accept", ".hkg");
$('.airport.lax').droppable("option", "accept", ".lax");
}); // You have to include the '.' in the class name of the airport because the last argument is a selector. For instance to do the first one:

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Drop()
Убирает объект.
$(document).ready( function () {
$('.flight').draggable({hoverClass:'correct'});
$('.airport').droppable({hoverClass:'correct', drop: function(event, ui){
ui.draggable.remove();
}});
$('.airport.lhr').droppable("option", "accept", ".lhr");
$('.airport.ord').droppable("option", "accept", ".ord");
$('.airport.hkg').droppable("option", "accept", ".hkg");
$('.airport.lax').droppable("option", "accept", ".lax");
});

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