function execute () {
data = new Date();
year = data.getYear();
year = (year < 2000) ? year + 1900 : year;
month = data.getMonth() + 1;
date = data.getDate();
table = document.getElementById('calendartb');
flag = 0;
summary = table.getAttribute('summary');
if (month < 10) {
    month = '0' + month;
}
text = year + 'ǯ' + month + '·î';
if (summary.indexOf(text) != -1) {
    elements = table.getElementsByTagName('span');
    for(k = 0; k < elements.length; k++) {
        if (elements[k].childNodes){
            if((elements[k].childNodes)[0].nodeName == 'A') {
                if((elements[k].childNodes)[0].innerHTML == date) {
                    elements[k].parentNode.setAttribute('class','today');
                    elements[k].parentNode.setAttribute('className','today');
                }
            } else {
                if (elements[k].innerHTML == date) {
                    elements[k].parentNode.setAttribute('class','today');
                    elements[k].parentNode.setAttribute('className','today');
                }
            }
        }
    }
}
}