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 );
        }
    };