function setDeceleratingTimeout(callback, factor, times){
 var internalCallback = function(tick, counter) {
 return function() {
 if (--tick >= 0) {
 window.setTimeout(internalCallback, ++counter * factor);
 callback();
 }
 }
 }(times, 0);

 window.setTimeout(internalCallback, factor);};// console.log() requires firebug 
 setDeceleratingTimeout(function(){ console.log('hi');
 }, 10, 10);setDeceleratingTimeout(function(){ console.log('bye'); }, 100, 10);