Question

In this menu the sub categories slide down. I used CSS to keep the sub menu open when on the main categorys page, but the jQuery slideUp() function disables that on mouseOut. I would like to keep the sub-menu always open when on the main categories page.

<div id="sidebar">
 <ul>
    <li class="main">
        <a href="real_estate.php" class="real_estate">Real Estate </a>
        <ul class="sub" id="sub_real_estate">
            <li> <a href="consulting.php">Consulting Services</a></li>
            <li> <a href="investment.php">Investment</a></li>
            <li> <a href="property_mgmt.php">Property Management</a></li>
            <li> <a href="development.php">Development</a></li>
        </ul>
    </li>
    <li class="main">
        <a href="investment.php" class="">Investment</a>
        <ul class="sub" id="sub_investment">
            <li><a href="philosophy.php">Philosophy</a></li>
          <li><a href="criteria.php">Criteria</a></li>
      </ul>
    </li>
</ul>
</div>

Jquery

$(document).ready(function() {
$(".main").hover(function() {
    $(".sub", this).slideDown('slow');
},
function() {
    $(".sub", this).slideUp('slow');
});
})  

CSS

.sub {display:none;}

body.real_estate #sub_real_estate, body.investment #sub_investment {
display:block;
}  

Answer 1

Try this:

$(document).ready(function() {
    $(".main").hover(function() {
        $(".sub", this).slideDown('slow');
    },
    function() {
        if(window.location.href != 'mysite.com/main-categories')
        {
            $(".sub", this).slideUp('slow');
        }
    });
});

Simply alert(window.location.href); to see what your main-categories page href is, and swap that value into the comparison I provided above.