$('.demo1 .div').dragon({
col: 4,
row: 2,
margin: 2
});
$('.demo2 .div').dragon({
col: 1,
row: 5,
restrict: 'x'
});
$('.demo3 .div').dragon({
col: 1,
row: 5
});
$('.demo4 .div').dragon({
col: 5,
row: 1,
restrict: 'y'
});