TAB{"text" ...} -- tab inside a tabpane widget

• Defines a tab inside a TABPANE area; must be closed using ENDTAB.
• Parameters:

  Parameter:	Description:	Default:
  container	element where ajax content will be loaded; this is only used together with url
  height	height of the tab area	auto
  id	id of this tab; this id can be used in the TABPANEs select parameter to display this tab; this id is also added to the class attribute of the html element representing the tab button
  "text"	label of the tab	Tab
  url	link from where to load the content of the tab asynchronously when selecting this tab; the result of the addressed handler will replace the content area; if no url is set the content of the TAB ... ENDTAB area will be shown when the tab is selected
  after	this javascript handler is to be executed after the tab has been made visible
  afterload	this javascript handler will be called when content loaded asynchronously (using the url parameter, below) has finished loading; depending on the network latency, this can be significantly later than execution of the after handler above
  before	when switching tabs, this is the javascript fragment to be executed just before the tab is displayed
  width	width of the tab area	auto

• Related: VarENDTAB, VarTABPANE, VarENDTABPANE, JQueryPlugin, JQueryTabpane