gistfile1.js

jQuery.fn.slowEach = function( interval, callback ) {
  var array = this;
  if( ! array.length ) return;
  var i = 0;
  next();
  function next() {
    if( callback.call( array[i], i, array[i] ) !== false )
      if( ++i < array.length )
        setTimeout( next, interval );
  }
};