function setDisplay(num) {
	var maxNum = 5;
	for (i=1;i<=maxNum;i++) {
		document.getElementById('tab'+ i).style.display = 'none';
		document.getElementById('midnavtab'+ i).className = 'midnav';
	}
	document.getElementById('tab'+ num).style.display = 'block';
	document.getElementById('midnavtab'+ num).className = 'midnavON';
	if (num == 1) {
		document.getElementById('showShare').style.display = 'none';
	} else {
		document.getElementById('showShare').style.display = 'block';
	}
	return false;
}

function getHash() {
  var hash = window.location.hash;
  return hash.substring(1); // remove #
}