Confirm in Kendo UI Treeview Drop event

Question

I'm trying to impliment drag drop with confirmation in a Kendo UI Treeview. I'm linking to the latest version of the kendo controls via their CDN.

My treeview is created using the following code (data source ommited for brevity):

$("#treeview-left").kendoTreeView({
    dragAndDrop: true,
    dataSource: {....}
    drop: onDrop,
});

function onDrop(e) {
    var nodeText = this.text(e.sourceNode);
    e.setValid(confirm("Sure you want to drop: " + nodeText));
}

If I run the code using the latest version of chrome then all is well, however using IE or Firefox a second confirm dialog is displayed when you mouse over the first dialog.

jsfiddle: http://jsfiddle.net/KpEej/1/

How can I fix this so only one confirm is displayed.

Answer 1

There is a bug related to kendo events and alert.

You can find details here.

You should lose the confirm dialog and use a jQuery dialog.