function toggleTab(num) {
    var listEl = document.getElementById("mostPopular").getElementsByTagName("li");
    var boxMostViewed = document.getElementById("mostViewed");
    var boxMostEmailed = document.getElementById("mostEmailed");
	
	for (var i=0; i<listEl.length; i++) {
		if (i==num) {
			listEl[i].className+=listEl[i].className?' here':' here';
		} else {
			listEl[i].className='';
		}
	}
	
	if (num==0) {
		boxMostViewed.className+=boxMostViewed.className?' here':' here';
		boxMostEmailed.className='';
	} else if (num==1) {
		boxMostEmailed.className+=boxMostEmailed.className?' here':' here';
		boxMostViewed.className='';
	}
}