Point taken, then let me rephrase that. Threads we can fire and forget. Threads we can start "inside" our script and let them work while we do other stuff.

Point taken, then let me rephrase that. Threads we can fire and forget. Threads we can start "inside" our script and let them work while we do other stuff. myfunnyfunc = function(){/* do long funny stuff */} mycallback = function(){/* do something when done */} mythread = new Thread(myfunnyfunc,mycallback); Asynchronous like xmlhttprequest, just a way to replace the "settimeout" hack.