jQuery hover delay

delayHover.js

function delayHover(element, over, out, delay) {
    var timer;
    $(element).hover(function(){
        if (timer) {
            clearTimeout(timer);
            timer = null;
        } else {
            over.apply(this, arguments);
        }
    }, function(){
        var that = this,
            args = $.makeArray(arguments);
        timer = setTimeout(function(){
            out.apply(that, args);
            timer = null;
        }, delay);
    });
}

// example
$('.pulldown').each(function(){
    var menu = $(this).find('> .pulldown-menu');
    delayHover(this, function(){
        menu.slideDown();
    }, function(){
        menu.slideUp();
    }, 500);
});