function show_calendar(str_target, str_datetime, show_time) { var arr_months = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]; var week_days = ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"]; var n_weekstart = 0; // day week starts from (normally 0 or 1) if(str_datetime == null || str_datetime =="") { var dt_datetime = new Date(); } else { var dt_datetime = str2dt(str_datetime, show_time); } var dt_prev_month = new Date(dt_datetime); dt_prev_month.setMonth(dt_datetime.getMonth()-1); var dt_next_month = new Date(dt_datetime); dt_next_month.setMonth(dt_datetime.getMonth()+1); var dt_firstday = new Date(dt_datetime); dt_firstday.setDate(1); dt_firstday.setDate(1-(7+dt_firstday.getDay()-n_weekstart)%7); var dt_lastday = new Date(dt_next_month); dt_lastday.setDate(0); // print calendar header var tmp_str = "\n"+ "\n"+ " Calendar\n"+ "\n"+ "\n"+ "\n"+ "\n\n
\n"+ "\n"+ "\n \n"+ " \n"+ " \n\n" var str_buffer = new String (tmp_str); var dt_current_day = new Date(dt_firstday); // print weekdays titles str_buffer += "\n"; for (var n=0; n<7; n++) str_buffer += " \n"; // print calendar table str_buffer += "\n"; while (dt_current_day.getMonth() == dt_datetime.getMonth() || dt_current_day.getMonth() == dt_firstday.getMonth()) { // print row heder str_buffer += "\n"; for (var n_current_wday=0; n_current_wday<7; n_current_wday++) { if (dt_current_day.getDate() == dt_datetime.getDate() && dt_current_day.getMonth() == dt_datetime.getMonth()) // print current date str_buffer += " \n"; dt_current_day.setDate(dt_current_day.getDate()+1); } // print row footer str_buffer += "\n"; } // print calendar footer str_buffer += "\n\n" + "\n
"+ "\"previous"+ "" +arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+""+ "\"next
"+ ""+ week_days[(n_weekstart+n)%7]+"
"; else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6) // weekend days str_buffer += " "; else // print working days of current month str_buffer += " "; if (dt_current_day.getMonth() == dt_datetime.getMonth()) { // print days of current month str_buffer += ""+ ""; } //end if else { // print days of other months str_buffer += ""+ ""; } //else str_buffer += dt_current_day.getDate()+"
"+ ""; if(show_time) { str_buffer += "Time: "; } //end if show_time str_buffer += "
\n" + "
\n" + "\n" + "\n"; var vWinCal = window.open("", "Calendar", "width=300,height=260,status=no,resizable=yes,top=300,left=300"); vWinCal.opener = self; var calc_doc = vWinCal.document; calc_doc.write (str_buffer); calc_doc.close(); } // datetime parsing and formatting routimes. function str2dt (str_datetime, show_time) { if(show_time) var re_date = /^(\d+)\-(\d+)\-(\d+)\s+(\d+)\:(\d+)\:(\d+)$/; else var re_date = /^(\d+)\-(\d+)\-(\d+)\s+$/; if (!re_date.exec(str_datetime)) return alert("Invalid Datetime format: "+ str_datetime); return (new Date (RegExp.$1, RegExp.$2-1, RegExp.$3, RegExp.$4, RegExp.$5, RegExp.$6)); } function dt2dtstr (dt_datetime) { return (new String ( checkTime(dt_datetime.getFullYear())+"-"+checkTime((dt_datetime.getMonth()+1))+"-"+checkTime(dt_datetime.getDate())+" ")); } function dt2tmstr (dt_datetime) { dt_datetime.setHours(new Date().getHours()+1); dt_datetime.setMinutes(0); dt_datetime.setSeconds(0); return (new String ( checkTime(dt_datetime.getHours())+":"+checkTime(dt_datetime.getMinutes())+":"+checkTime(dt_datetime.getSeconds()))); } function checkTime(i) { if (i<10) { i="0" + i } return i; }