jquery $.ajax()

Zdravim vas.. potrebuji poradit, nechapu jednu vec v jquery, nize uvedeny kod nidky nezavola funci succeess.. nevite proc? webovy server vraci 200 a stranka se naloaduje dobre, POST se posle take dobre.. samotna url se nastavi v ajaxSetup() GET pozadavky success volaji bez problemu.. function keepAlive() { var action = "alive"; $.ajax({ type: "POST", data: ({action:action}), success: function(data) { alert('keep alive'); }, error : function(XMLHttpRequest, textStatus, errorThrown) { serverErorrHandler(action, XMLHttpRequest, textStatus, errorThrown); } }); } diky za radu ---------- Post was amended at 23:41 ---------- odpovim si sam, spatne nastavene dataType v ajaxSetup :/