function displayInterstitialPage(divId) {
	var wrapper = document.getElementById('wrapper');
	wrapper.style.display = 'none';
	var interstitialDiv = document.getElementById(divId);
	interstitialDiv.style.display = '';
}

function appendInterstitialPage(divId, url) {
	var interstitialDiv = document.createElement('div');
	interstitialDiv.setAttribute('id', divId);
	interstitialDiv.style.display = 'none';
	document.body.appendChild(interstitialDiv);
	jQuery("#"+divId).load(url);
}