Javascript for Dynamically Expanding/Collapsing Quick Launch

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SharePoint2010

Hi,

I have a javascript written for Expanding/Collapsing the quick launch.It work's fine.
But the problemn is that i have some quick launch menu's without Sub-Menus(EG:Root2),So those which does not have the sub-menu I want the root menu to be redirected.The sub-Menu redirection is working Fine.

For Example:
Root1
->Sub Menu 1
->Sub Menu 2
Root2
Root3
->Sub Menu 1


Javascript:
<script type="text/javascript">

$(document).ready(function () {

$("div.menu-vertical>ul.root>li.static>a").toggle(
function () {
$(">ul", $(this).parent()).show("fast");
},
function () {
$(">ul", $(this).parent()).hide("fast");
}
);

$("div.menu-vertical>ul.root>li.static>ul.static").css("display","none");

var s = $("div.menu-vertical>ul.root>li.static>ul.static>li.selected").parent();
var p=s.parent();

p.find('ul').css("display","");

p.find('li').css("color","red");


});


</script>


Thanks