var targetField = null; var arr_months = ["Enero", "Febrero", "Marzo", "Abril", "Mayo", "Junio", "Julio", "Agosto", "Setiembre", "Octubre", "Noviembre", "Diciembre"]; var week_days = ["Do", "Lu", "Ma", "Mi", "Ju", "Vi", "Sa"]; var calHead = "\n"+ "\n"+ " Calendario\n"+ "\n"+ "\n"+ "\n"+ "\n"+ "\n\n
\n"+ "\n"; function show_calendar(str_target, str_datetime) { var n_weekstart = 1; targetField = str_target var dt_datetime = (str_datetime == null || str_datetime =="" ? new Date() : str2dt(str_datetime)); 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); var str_buffer = new String (calHead+ "\n \n"+ " \n"+ ""+ "\n\n" ); var dt_current_day = new Date(dt_firstday); // Imprime los titulos de los dias de la semana str_buffer += "\n"; for (var n=0; n<7; n++) str_buffer += " \n"; // imprime la tabla del calendario str_buffer += "\n"; while (dt_current_day.getMonth() == dt_datetime.getMonth() || dt_current_day.getMonth() == dt_firstday.getMonth()) { // inicio de una fila str_buffer += "\n"; for (var n_current_wday=0; n_current_wday<7; n_current_wday++) { var estilo = null; if (dt_current_day.getDate() == dt_datetime.getDate() && dt_current_day.getMonth() == dt_datetime.getMonth()){ // Dia actual estilo = "\"da\""; } else if (dt_current_day.getDay() == 0 || dt_current_day.getDay() == 6){ // fines de semana if (dt_current_day.getMonth() == dt_datetime.getMonth()) estilo = "\"dl\""; else estilo = "\"dlmd\""; } else { // dias laborales del mes actual if (dt_current_day.getMonth() == dt_datetime.getMonth()) estilo = "\"dn\""; else // dias laborales del mes anterior y posterior estilo = "\"dmd\""; } str_buffer += "\n"; dt_current_day.setDate(dt_current_day.getDate()+1); } // Cierre de la fila str_buffer += "\n"; } // Pie de pagina del calendario str_buffer += "" + "
"+ "\"mes"+ "" +arr_months[dt_datetime.getMonth()]+" "+dt_datetime.getFullYear()+""+ "Hoy"+ "\"mes
"+week_days[(n_weekstart+n)%7]+"
"; str_buffer += ""; str_buffer += ""+dt_current_day.getDate()+"
"+ ""+ ""+ ""+ ""+ "
\n" + "
\n" + "\n" + "\n"; var vWinCal = window.open("", "Calendar", "width=230,height=265,status=no,resizable=yes,top=200,left=200"); vWinCal.opener = self; var calc_doc = vWinCal.document; calc_doc.write (str_buffer); calc_doc.close(); } function str2dt (str_datetime) { var re_date = /^(\d+)\/(\d+)\/(\d+)$/; if (!re_date.exec(str_datetime)){ alert("Formato de fecha-hora invalido: "+ str_datetime); return new Date(); } return (new Date (RegExp.$3, RegExp.$2-1, RegExp.$1)); } function dt2dtstr (dt_datetime) { return (new String ( makeTwoDigit(dt_datetime.getDate())+"/"+makeTwoDigit((dt_datetime.getMonth()+1))+"/"+dt_datetime.getFullYear())); } function selectedmonth(val, dt_current_day){ return (val == dt_current_day.getMonth()+1?"SELECTED":""); } function saltames(str_datetime, nuevomes){ dt_new_month = str2dt(str_datetime); dt_new_month.setMonth(nuevomes-1); show_calendar(targetField, dt2dtstr(dt_new_month)); } function saltaanho(str_datetime, nuevoanho){ dt_new_month = str2dt(str_datetime); dt_new_month.setYear(nuevoanho); show_calendar(targetField, dt2dtstr(dt_new_month)); } function escoge(str_datetime){ eval(targetField+".value='"+str_datetime+"'"); } function makeTwoDigit(inValue) { var numVal = parseInt(inValue, 10); return(numVal<10?"0" + numVal:numVal) }