var main = document.getElementById('mainbody');
var divs = main.getElementsByTagName('div');

for(var i=0;i<divs.length;i++) {
	if(divs[i].className == 'EventCalendarWeekDay') {
		//alert(divs[i].innerHTML);
		if(divs[i].innerHTML.toLowerCase().indexOf('<div class="event datename">weekly events</div>') > -1) {
			divs[i].style.display = 'none';
			break;
		}
	}
}