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!function ($) {
$(function(){
// fix sub nav on scroll
var $win = $(window)
, $nav = $('.subnav')
, navHeight = $('.navbar').first().height()
, navTop = $('.subnav').length && $('.subnav').offset().top - navHeight
, isFixed = 0
processScroll()
$win.on('scroll', processScroll)
function processScroll() {
var i, scrollTop = $win.scrollTop()
if (scrollTop >= navTop && !isFixed) {
isFixed = 1
$nav.addClass('subnav-fixed')
} else if (scrollTop <= navTop && isFixed) {
isFixed = 0
$nav.removeClass('subnav-fixed')
}
}
})
}(window.jQuery)
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