function displayScrollEvent(element, evnt, funct){
if (element.attachEvent)
return element[0].attachEvent('on'+evnt, funct);
else
return element[0].addEventListener(evnt, funct, false);
}
displayScrollEvent(
document.getElementsByClassName('vfa-ctc'),
'click',
function () {
document.getElementsByTagName("body")[0].style.overflowY = "hidden";
}
);