function initCalendar(){
	var cells = document.getElementsByTagName("tbody")[0].getElementsByTagName("td");
	for (var i = 0; i < cells.length; i++) {
		if (cells[i].getElementsByTagName("ul").length > 0) {
			cells[i].onmouseover = function(){
				this.style.backgroundColor = "#dddddd";
				this.style.cursor = "pointer";
			}
			cells[i].onmouseout = function(){
				this.style.backgroundColor = "transparent";
				this.style.cursor = "auto";
			}
			cells[i].onclick = function(){
				var win = window.open("http://www.bulverdeseniorcenter.com/activities/listevents.php?date=" + this.getAttribute("date"), "eventWin", "left=50,top=50,height=400,width=500");
				win.focus();
			}
		}
	}
}

addEventHandler(window, "load", initCalendar);