function calDate(td,idField,val)  {
	calDisableSelectedFields(idField);
	pntAddToClassName(td,'selected');
	document.getElementById(idField).value = val;
}

function calDisableSelectedFields(idField) {
	var table = document.getElementById('cal_'+idField);
	var tds = table.getElementsByTagName('td');
	for(i=0;i<tds.length;i++) {
		pntRemoveFromClassName(tds[i],'selected');
	}
}