onBeforeDragIn

fires before an item is dragged to another potential target

context	object	context object
ev	Event object	native event object

boolean

true - to trigger the default action, false - to block it

Example

myList.attachEvent("onBeforeDragIn", function (context, ev){
    // your code here
    return true;
});

• context.start - ID of an item, from which the dragging process was started
• context.source - an array of dragged IDs (drag source)
• context.target - ID of the target item (drop target)
• context.from - a list object to which the dragged item belongs
• context.to - a list object to which the drop target belongs
• context.index - an index in the target list at which new item will be added

The event is blockable, returning false will block the default action.

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