onBeforeStatusChange

fires before an item is going to be dropped into the list with a different status

boolean onBeforeStatusChange(string itemId,string status,object list);

itemId	string	the item id
status	string	a new item status
list	object	the list object where the event has happened

boolean

returning false will prevent further drag-and-drop processing

Example

$$("myBoard").attachEvent("onBeforeStatusChange", function(itemId,status,list){
    var status = this.getItem(itemId).status;
    if(...){
        return false;
    }
    return true;
});