onBeforeSync

called when server side response received, but not processed yet

void onBeforeSync(object obj,string text,object data,object loader);

obj	object	object with item ID and operation status
text	string	full text of server side response
data	object	ajax response object
loader	object	ajax loader object

dp.attachEvent("onBeforeSync", function(id, text, data, loader){
    //... some code here ... 
});