function onEmptyContent() {
	n = 0;
	anzahl = document.images.length;
	for(i=0; i < anzahl; i++){ if(document.images[i].complete == true) n++; }

	if(n < anzahl){
		setTimeout("onEmptyContent()", 100);
	}
	else{
		var nav_height = $('#navigation').height();
		var div_height = $('#contents').height();
		if(nav_height > div_height){ $('#contents').height(nav_height); }
	}
}

$(document).ready(function(){
/// Höhe Content Div checken und manipulieren
	onEmptyContent();

/// Automatisches ausblenden und ausklappen der Navigation
	if(site){
		$('#' + site).animate({ height: 'show', opacity: 'show' }, 'slow', function(){
			var nav_height = $('#navigation').height();
			var div_height = $('#contents').height();
			if(nav_height > div_height){ $('#contents').height(nav_height); }
		});
	}
});