function DeleteNode(item, argument) {
                        var node = argument;
                        if (confirm("Are you sure want to delete node " + node.getText() ))
                        {
                            node.remove();
                        }
                        else{return false}
                    }

function DeleteNode(item, argument) {
    var node = argument;
    if (confirm("Are you sure want to delete node " + node.getValue()))
    {
        node.remove();                            
        item.setAutoPostBack(true);
    }
}

function DeleteNode(item, argument) {
                        var node = argument;
                        if (confirm(" Are you sure to delete node? \n" +
                                    node.getText() ))
                        {
                            node.remove();
                            item.setAutoPostBack(true);
                        }
                        else
                        {
                        item.setAutoPostBack(false);
                        }
                    }