timeToHide = 18;

function hideTheContent(timeToHide) {
	timeToHide = timeToHide*1000;
setTimeout("document.getElementById('PopUp').style.visibility = 'hidden'",timeToHide);
document.getElementById('fCounter').style.display = 'inline';
document.getElementById('counter').style.background = 'transparent';
document.getElementById('counter').style.border = '0 none';
document.getElementById('counter').style.width = '12px';
}

seconds=timeToHide;
function myCounter(timeToHide) {
if (timeToHide>=0) {
    seconds-=1;
document.getElementById('counter').value=timeToHide; 
setTimeout("myCounter(seconds)",1000);
}
}