function init_calendar(ids) {
	if (ids.length) {
		for (var i=0; i<ids.length; i++) {
	        	var picker = document.getElementById('picker-input-date-'+ids[i]);
        		var attr =  new Object ();
        		attr.oPickerOpenerElement=picker;
        		var oInput = ZForms.createDateInput(
                		document.getElementById('input-date-'+ids[i]),
                		document.getElementById('row-date-'+ids[i]),
                		attr
        		);
        		oInput.init();
		} 
	}
}