function sticky(obj){
 document.getElementById(obj).style.visibility = 'visible';
}
function unsticky(obj){
 document.getElementById(obj).style.visibility = 'hidden';
}
function resetstickys(){
 document.getElementById('menu-services-sticky').style.visibility = 'hidden';
 document.getElementById('menu-products-sticky').style.visibility = 'hidden';
 document.getElementById('menu-whats-on-sticky').style.visibility = 'hidden';
 document.getElementById('menu-features-sticky').style.visibility = 'hidden';
 document.getElementById('menu-contact-us-sticky').style.visibility = 'hidden';
}