public void decrQueue(QueueControl control)
{
QueueHandler.Instance.setCollectionID(control.collection, control.collection.id--);
int index = flowLayoutPanel1.Controls.GetChildIndex(control);
flowLayoutPanel1.Controls.SetChildIndex(flowLayoutPanel1.Controls[index--], index);
flowLayoutPanel1.Controls.SetChildIndex(control, index--);
UpdateUI(this, null);
}