function togglePopular(numTabID) {
	if (numTabID == 1)
	{
		document.getElementById('popular_viewed').style.display = 'inline';
		document.getElementById('popular_commented').style.display = 'none';
		
		document.getElementById('tab_viewed').className = 'tab_selected';
		document.getElementById('tab_commented').className = 'tab';
	}
	else
	{
		document.getElementById('popular_viewed').style.display = 'none';
		document.getElementById('popular_commented').style.display = 'inline';
		
		document.getElementById('tab_viewed').className = 'tab';
		document.getElementById('tab_commented').className = 'tab_selected';
	}
	
}