Mega-menu on hover without lists

I have this mega-menu that I want to show on hover and keep open until the user leaves the mega-menu or the trigger area. I have it working onClick, but I cannot seem to get it to work on-hover. Any help would be MUCH appreciated.

<div class="down">
    <div id="showb">
        <a href="#" id="menu-show" class="down"></a>
    </div><!-- end show button -->
    <div id="hideb">
        <a href="#" id="menu-hide" class="up"></a>
    </div><!--end hide button -->   
    <div id="menu" style="display: block;">
        <div class="menu-main">Menu Contents</div>
        <div class="menu-bottom"></div>
    </div>
</div>

    // hides the menu as soon as the DOM is ready
    // (a little sooner than page load)
    jQuery('#menu').hide();
    jQuery('#hideb').hide();
    // shows the menu on clicking the noted link
    jQuery('a#menu-show').click(function() {
        jQuery('#showb').hide();
        jQuery('#hideb').show();
        jQuery('#menu').slideDown();
        return false;
    });
    // hides the menu on clicking the noted link
    jQuery('a#menu-hide').click(function() {
        jQuery('#showb').show();
        jQuery('#hideb').hide();
        jQuery('#menu').slideUp();
        return false;
    });

You can see it here too http://jsfiddle.net/notanothercliche/5CDEE/

    <div id="menu">
    <div id="show-menu">
    </div>
</div>
<div id="mega-menu">
    <div class="menu-main">Menu Contents</div>
    <div class="menu-bottom"></div>
</div>

jQuery(document).ready(function() {

    // open
    jQuery('#show-menu').bind('mouseenter', function() {

        // increase the height of our container
        jQuery('#menu').height('300px');

        // do the main animation
        jQuery('#show-menu').stop().css({
            'backgroundPosition': 'bottom'
        }, 300);
        jQuery('#mega-menu').slideDown(500);
    });


    // close
    function closeMainNav() {
        jQuery('#show-menu').stop().css({
            'backgroundPosition': 'top'
        }, 300);
        jQuery('#mega-menu').slideUp(500);
        jQuery('#menu').height('17px');
    }

    // close when the following happens
    jQuery('#menu').bind('mouseleave', closeMainNav);
});

Even better for the click version, I used the toggleClass and slideToggle. MUCH shorter coding this way. See the demo here http://jsfiddle.net/notanothercliche/5CDEE/

    <a href="#" id="menu-show" class="down"></a>

<div id="menu">
    <div class="menu-main">
        Menu Contents
        <ul>
            <li>Menu Item 1</li>
            <li>Menu Item 2</li>
            <li>Menu Item 3</li>
          <div class="clear"></div>
        </ul>
        More HTML content
    </div>
    <div class="menu-bottom"></div>
</div>

jQuery(document).ready(function() {
    // hides the menu as soon as the DOM开发者_运维技巧 is ready
    // (a little sooner than page load)
    jQuery('#menu').hide();
    // shows the menu on clicking the noted link
    jQuery('a#menu-show').click(function() {
        // toggles the indicator arrow
        jQuery('a.down').toggleClass('up')
        jQuery('#menu').slideToggle();
        return false;
    });
});

Why not do a pure CSS menu instead ?

The issue with your solution is how the html and css is laid out. I've made an adjustment here

http://jsfiddle.net/nTskw/

this doesn't hide the up button but swaps the class instead. There is a slight gap in between the animation that needs to be worked on, but I think this is down to the positioning of the elements still. It might be worth binding the mouseover on a surrounding div