javascript: indesign get date string

gistfile1

function get_date_string(para_date) {
	var date = para_date || new Date();
	var day = (date.getDate() > 10 ) ? date.getDate() : ("0" + date.getDate() ),
		month = ((date.getMonth()+1) > 10 ) ? (date.getMonth()+1) : ("0" + (date.getMonth()+1) ),
		year = (date.getFullYear() > 10 ) ? date.getFullYear() : ("0" + date.getFullYear() ),
		hours = (date.getHours() > 10 ) ? date.getHours() : ("0" + date.getHours() ),
		minutes = (date.getMinutes() > 10 ) ? date.getMinutes() : ("0" + date.getMinutes() );
	
	return year + month + day + "_" + hours + minutes;
};