FB app page tab - infinite scroll

gistfile1.txt

window.fbAsyncInit = function() {
	FB.init({
		appId      : '<?php echo FB_APP_ID; ?>', // App ID
		status     : true, // check login status
		cookie     : true, // enable cookies to allow the server to access the session
		oauth      : true, // enable OAuth 2.0
		xfbml      : true  // parse XFBML
	});

	FB.Canvas.setAutoGrow();
	FB.Canvas.scrollTo(0,0);


function getDocHeight() {
    var D = document;
    return Math.max(
        Math.max(D.body.scrollHeight, D.documentElement.scrollHeight),
        Math.max(D.body.offsetHeight, D.documentElement.offsetHeight),
        Math.max(D.body.clientHeight, D.documentElement.clientHeight)
    );
}

setInterval(function() {
	FB.Canvas.getPageInfo(function(pageInfo){

		var documentHeight = getDocHeight();

		var log = '';
		for(var x in pageInfo)
			log += '<b>' + x + '</b>: ' + pageInfo[x] + '<br />';

		log += '<br />';
		log += 'documentHeight: ' + documentHeight + '<br />';


		var scrollTop2 = ( pageInfo.scrollTop - pageInfo.offsetTop );
		log += 'scrollTop2 : ' + scrollTop2 + '<br />';

		var clientHeight2 = ( pageInfo.clientHeight - pageInfo.offsetTop );
		log += 'clientHeight2 : ' + clientHeight2 + '<br />';

		log += ( documentHeight - clientHeight2 - pageInfo.scrollTop );


		// #debug = div
		$('#debug').html(log);
		$('#debug').css('top', 100 + pageInfo.scrollTop);


		if ( ( documentHeight - clientHeight2 - pageInfo.scrollTop ) < 0 )
		{
			// #lipsum = container
			// #sample = content à ajouter
			$('#lipsum').append( $('#sample').clone() );
		}
	});
}, 1000);

};