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SHR4P.load(); ; /** Credit: http://www.nsftools.com/tips/DatePickerTest.htm */ var datePickerDivID = "datepicker"; var iFrameDivID = "datepickeriframe"; var dayArrayShort = new Array('Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'); var dayArrayMed = new Array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'); var dayArrayLong = new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'); var monthArrayShort = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'); var monthArrayMed = new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'June', 'July', 'Aug', 'Sept', 'Oct', 'Nov', 'Dec'); var monthArrayLong = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'); // these variables define the date formatting we're expecting and outputting. // If you want to use a different format by default, change the defaultDateSeparator // and defaultDateFormat variables either here or on your HTML page. var defaultDateSeparator = "/"; // common values would be "/" or "." var defaultDateFormat = "mdy" // valid values are "mdy", "dmy", and "ymd" var dateSeparator = defaultDateSeparator; var dateFormat = defaultDateFormat; /** This is the main function you'll call from the onClick event of a button. Normally, you'll have something like this on your HTML page: Start Date: That will cause the datepicker to be displayed beneath the StartDate field and any date that is chosen will update the value of that field. If you'd rather have the datepicker display beneath the button that was clicked, you can code the button like this: So, pretty much, the first argument (dateFieldName) is a string representing the name of the field that will be modified if the user picks a date, and the second argument (displayBelowThisObject) is optional and represents an actual node on the HTML document that the datepicker should be displayed below. In version 1.1 of this code, the dtFormat and dtSep variables were added, allowing you to use a specific date format or date separator for a given call to this function. Normally, you'll just want to set these defaults globally with the defaultDateSeparator and defaultDateFormat variables, but it doesn't hurt anything to add them as optional parameters here. An example of use is: This would display the datepicker beneath the StartDate field (because the displayBelowThisObject parameter was false), and update the StartDate field with the chosen value of the datepicker using a date format of dd.mm.yyyy */ function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep) { var targetDateField = document.getElementsByName (dateFieldName).item(0); // if we weren't told what node to display the datepicker beneath, just display it // beneath the date field we're updating if (!displayBelowThisObject) displayBelowThisObject = targetDateField; // if a date separator character was given, update the dateSeparator variable if (dtSep) dateSeparator = dtSep; else dateSeparator = defaultDateSeparator; // if a date format was given, update the dateFormat variable if (dtFormat) dateFormat = dtFormat; else dateFormat = defaultDateFormat; var x = displayBelowThisObject.offsetLeft; var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ; // deal with elements inside tables and such var parent = displayBelowThisObject; while (parent.offsetParent) { parent = parent.offsetParent; x += parent.offsetLeft; y += parent.offsetTop ; } drawDatePicker(targetDateField, x, y); } /** Draw the datepicker object (which is just a table with calendar elements) at the specified x and y coordinates, using the targetDateField object as the input tag that will ultimately be populated with a date. This function will normally be called by the displayDatePicker function. */ function drawDatePicker(targetDateField, x, y) { var dt = getFieldDate(targetDateField.value ); // the datepicker table will be drawn inside of a
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.display = (pickerDiv.style.display == "block" ? "none" : "block"); 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 += " "; html += ""; 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 ""; } /** 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 if (dateString) { dateVal = new Date(dateString); } else { dateVal = new Date(); } } 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; } /** Update the field with the given dateFieldName with the dateString that has been passed, and hide the datepicker. If no dateString is passed, just close the datepicker without changing the field value. Also, if the page developer has defined a function called datePickerClosed anywhere on the page or in an imported library, we will attempt to run that function with the updated field as a parameter. This can be used for such things as date validation, setting default values for related fields, etc. For example, you might have a function like this to validate a start date field: function datePickerClosed(dateField) { var dateObj = getFieldDate(dateField.value); var today = new Date(); today = new Date(today.getFullYear(), today.getMonth(), today.getDate()); if (dateField.name == "StartDate") { if (dateObj < today) { // if the date is before today, alert the user and display the datepicker again alert("Please enter a date that is today or later"); dateField.value = ""; document.getElementById(datePickerDivID).style.visibility = "visible"; adjustiFrame(); } else { // if the date is okay, set the EndDate field to 7 days after the StartDate dateObj.setTime(dateObj.getTime() + (7 * 24 * 60 * 60 * 1000)); var endDateField = document.getElementsByName ("EndDate").item(0); endDateField.value = getDateString(dateObj); } } } */ function updateDateField(dateFieldName, dateString) { var targetDateField = document.getElementsByName (dateFieldName).item(0); if (dateString) targetDateField.value = dateString; var pickerDiv = document.getElementById(datePickerDivID); pickerDiv.style.visibility = "hidden"; pickerDiv.style.display = "none"; 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); } /** Use an "iFrame shim" to deal with problems where the datepicker shows up behind selection list elements, if they're below the datepicker. The problem and solution are described at: http://dotnetjunkies.com/WebLog/jking/archive/2003/07/21/488.aspx http://dotnetjunkies.com/WebLog/jking/archive/2003/10/30/2975.aspx */ function adjustiFrame(pickerDiv, iFrameDiv) { // we know that Opera doesn't like something about this, so if we // think we're using Opera, don't even try var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1); if (is_opera) return; // put a try/catch block around the whole thing, just in case try { 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 += "