add javascript to anchor onclick

Hi, i need to execute a js script when the user click on anchor link,

template is this http://www.templatemonster.com/demo/53145.html

i need to automatically close the left menu (like when the user click on the button for close) when hi click on anchor link

js for close is this (i think)

`function closeMenu(){ menuCloseBtn.stop().animate({top:’-75px’}, 1500, ‘easeOutQuart’);
menuBtn.stop().delay(350).animate({opacity:’1′}, 1000, ‘easeOutQuart’);
menuOverlay.stop().animate({width:’0px’}, 1000, ‘easeOutQuart’, function(){
menuHolder.addClass(‘menu-hidden’);
});

menuItems.each(function(){
_this = jQuery(this);
_this.stop().animate({left:’290px’}, 1000, ‘easeOutQuart’);
})
}