with an ID defined by the // global datePickerDivID variable. If such a div doesn't yet exist on the HTML // document we're working with, add one. if (!document.getElementById(datePickerDivID)) { // don't use innerHTML to update the body, because it can cause global variables // that are currently pointing to objects on the page to have bad references //document.body.innerHTML += ""; var newNode = document.createElement("div"); newNode.setAttribute("id", datePickerDivID); newNode.setAttribute("class", "dpDiv"); newNode.setAttribute("style", "visibility: hidden;"); document.body.appendChild(newNode); } // move the datepicker div to the proper x,y coordinate and toggle the visiblity var pickerDiv = document.getElementById(datePickerDivID); pickerDiv.style.position = "absolute"; pickerDiv.style.left = x + "px"; pickerDiv.style.top = y + "px"; pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible"); pickerDiv.style.zIndex = 10000; // draw the datepicker table refreshDatePicker(targetDateField.name, dt.getFullYear(), dt.getMonth(), dt.getDate()); } /** This is the function that actually draws the datepicker calendar. */ function refreshDatePicker(dateFieldName, year, month, day) { // if no arguments are passed, use today's date; otherwise, month and year // are required (if a day is passed, it will be highlighted later) var thisDay = new Date(); if ((month >= 0) && (year > 0)) { thisDay = new Date(year, month, 1); } else { day = thisDay.getDate(); thisDay.setDate(1); } // the calendar will be drawn as a table // you can customize the table elements with a global CSS style sheet, // or by hardcoding style and formatting elements below var crlf = "\r\n"; var TABLE = "" + crlf; var xTABLE = "" + crlf; var TR = ""; var TR_title = ""; var TR_days = ""; var TR_todaybutton = ""; var xTR = "" + crlf; var TD = ""; if (dayNum == day) html += TD_selected + TD_onclick + DIV_selected + dayNum + xDIV + xTD; else html += TD + TD_onclick + dayNum + xTD; // if this is a Saturday, start a new row if (thisDay.getDay() == 6) html += xTR + TR; // increment the day thisDay.setDate(thisDay.getDate() + 1); } while (thisDay.getDate() > 1) // fill in any trailing blanks if (thisDay.getDay() > 0) { for (i = 6; i > thisDay.getDay(); i--) html += TD + " " + xTD; } html += xTR; // add a button to allow the user to easily return to today, or close the calendar var today = new Date(); var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[today.getMonth()] + " " + today.getDate(); html += TR_todaybutton + TD_todaybutton; html += "this month "; html += "close"; html += xTD + xTR; // and finally, close the table html += xTABLE; document.getElementById(datePickerDivID).innerHTML = html; // add an "iFrame shim" to allow the datepicker to display above selection lists adjustiFrame(); } /** Convenience function for writing the code for the buttons that bring us back or forward a month. */ function getButtonCode(dateFieldName, dateVal, adjust, label) { var newMonth = (dateVal.getMonth() + adjust) % 12; var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12); if (newMonth < 0) { newMonth += 12; newYear += -1; } return "" + label + ""; } /** Convert a JavaScript Date object to a string, based on the dateFormat and dateSeparator variables at the beginning of this script library. */ function getDateString(dateVal) { var dayString = "00" + dateVal.getDate(); var monthString = "00" + (dateVal.getMonth()+1); dayString = dayString.substring(dayString.length - 2); monthString = monthString.substring(monthString.length - 2); switch (dateFormat) { case "dmy" : return dayString + dateSeparator + monthString + dateSeparator + dateVal.getFullYear(); case "ymd" : return dateVal.getFullYear() + dateSeparator + monthString + dateSeparator + dayString; case "mdy" : default : return monthString + dateSeparator + dayString + dateSeparator + dateVal.getFullYear(); } } /** Convert a string to a JavaScript Date object. */ function getFieldDate(dateString) { var dateVal; var dArray; var d, m, y; try { dArray = splitDateString(dateString); if (dArray) { switch (dateFormat) { case "dmy" : d = parseInt(dArray[0], 10); m = parseInt(dArray[1], 10) - 1; y = parseInt(dArray[2], 10); break; case "ymd" : d = parseInt(dArray[2], 10); m = parseInt(dArray[1], 10) - 1; y = parseInt(dArray[0], 10); break; case "mdy" : default : d = parseInt(dArray[1], 10); m = parseInt(dArray[0], 10) - 1; y = parseInt(dArray[2], 10); break; } dateVal = new Date(y, m, d); } else { dateVal = new Date(dateString); } } catch(e) { dateVal = new Date(); } return dateVal; } /** Try to split a date string into an array of elements, using common date separators. If the date is split, an array is returned; otherwise, we just return false. */ function splitDateString(dateString) { var dArray; if (dateString.indexOf("/") >= 0) dArray = dateString.split("/"); else if (dateString.indexOf(".") >= 0) dArray = dateString.split("."); else if (dateString.indexOf("-") >= 0) dArray = dateString.split("-"); else if (dateString.indexOf("\\") >= 0) dArray = dateString.split("\\"); else dArray = false; return dArray; } function updateDateField(dateFieldName, dateString) { var targetDateField = document.getElementsByName(dateFieldName).item(0); if (dateString) targetDateField.value = dateString; document.getElementById(datePickerDivID).style.visibility = "hidden"; adjustiFrame(); targetDateField.focus(); // after the datepicker has closed, optionally run a user-defined function called // datePickerClosed, passing the field that was just updated as a parameter // (note that this will only run if the user actually selected a date from the datepicker) if ((dateString) && (typeof(datePickerClosed) == "function")) datePickerClosed(targetDateField); } function adjustiFrame(pickerDiv, iFrameDiv) { if (!document.getElementById(iFrameDivID)) { // don't use innerHTML to update the body, because it can cause global variables // that are currently pointing to objects on the page to have bad references //document.body.innerHTML += "