var cal_act = 0;
function cal_click(num, e) {
    if(!cal_act) cal_act = document.getElementById("cal_act");
    if(event_db[num])
	document.getElementById("cal_event_list").innerHTML = '<ul>'+event_db[num]+'</ul>';
    else
	document.getElementById("cal_event_list").innerHTML = '';

    for(i=0;i<cal_act.parentNode.attributes.length; i++) 
	if(cal_act.parentNode.attributes[i].nodeName == 'class')
	    cal_act.parentNode.attributes[i].nodeValue = cal_act.parentNode.attributes[i].nodeValue.replace(/monthselected/,'');
    cal_act = e;
    for(i=0;i<cal_act.parentNode.attributes.length; i++) 
	if(cal_act.parentNode.attributes[i].nodeName == 'class')
	    cal_act.parentNode.attributes[i].nodeValue += ' monthselected';
    return false;
}