Calendar js
vitalif
commit
371f03040b
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.calendar-box {
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display:none;
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background-color:#fff;
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border:1px solid #444;
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position:absolute;
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width:250px;
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padding:0 5px;
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}
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.calendar-box select.calendar-month { width:90px; }
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.calendar-box select.calendar-year { width:70px; }
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.calendar-box .calendar-cancel { width:100%; }
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.calendar-box table td { width:14%; }
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.calendar-box .calendar-title { text-align:center; }
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.calendar-box a { text-decoration:none; }
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.calendar-box .today a { padding:0 5px; margin-left:-5px; background-color:#ffe9c6; }
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.calendar-box .selected a { padding:0 5px; margin-left:-5px; background-color:#c9ff8b; }
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/**
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* Calendar Script, slightly modified
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* Creates a calendar widget which can be used to select the date more easily than using just a text box
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* http://www.openjs.com/scripts/ui/calendar/
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*
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* Example:
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* <input type="text" name="date" id="date" />
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* <script type="text/javascript">
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* Calendar.set("date");
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* </script>
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*/
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var Calendar = {
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month_names: ["January","February","March","April","May","June","July","Augest","September","October","November","December"],
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weekdays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
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month_days: [31,28,31,30,31,30,31,31,30,31,30,31],
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//Get today's date - year, month, day and date
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today : new Date(),
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opt : {},
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data: [],
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//Functions
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/// Used to create HTML in a optimized way.
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wrt:function(txt) {
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this.data.push(txt);
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},
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getPosition:function(ele) {
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var x = 0;
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var y = 0;
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while (ele) {
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x += ele.offsetLeft;
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y += ele.offsetTop;
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ele = ele.offsetParent;
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}
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if (navigator.userAgent.indexOf("Mac") != -1 && typeof document.body.leftMargin != "undefined") {
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x += document.body.leftMargin;
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offsetTop += document.body.topMargin;
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}
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var xy = new Array(x,y);
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return xy;
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},
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/// Called when the user clicks on a date in the calendar.
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selectDate:function(year,month,day) {
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var ths = _calendar_active_instance;
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var i = document.getElementById(ths.opt["input"]);
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var t = i.value.split(/\s+/, 2)[1]||'';
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if (t)
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t = ' '+t;
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i.value = year + "-" + month + "-" + day + t; // Date format is :HARDCODE:
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ths.hideCalendar();
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},
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/// Creates a calendar with the date given in the argument as the selected date.
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makeCalendar:function(year, month, day) {
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year = parseInt(year);
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month= parseInt(month);
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day = parseInt(day);
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//Display the table
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var next_month = month+1;
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var next_month_year = year;
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if(next_month>=12) {
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next_month = 0;
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next_month_year++;
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}
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var previous_month = month-1;
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var previous_month_year = year;
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if(previous_month< 0) {
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previous_month = 11;
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previous_month_year--;
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}
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this.wrt("<table>");
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this.wrt("<tr><th><a href='javascript:Calendar.makeCalendar("+(previous_month_year)+","+(previous_month)+");' title='"+this.month_names[previous_month]+" "+(previous_month_year)+"'><</a></th>");
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this.wrt("<th colspan='5' class='calendar-title'><select name='calendar-month' class='calendar-month' onChange='Calendar.makeCalendar("+year+",this.value);'>");
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for(var i in this.month_names) {
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this.wrt("<option value='"+i+"'");
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if(i == month) this.wrt(" selected='selected'");
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this.wrt(">"+this.month_names[i]+"</option>");
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}
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this.wrt("</select>");
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this.wrt("<select name='calendar-year' class='calendar-year' onChange='Calendar.makeCalendar(this.value, "+month+");'>");
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var current_year = this.today.getYear();
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if(current_year < 1900) current_year += 1900;
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for(var i=current_year-70; i<current_year+10; i++) {
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this.wrt("<option value='"+i+"'")
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if(i == year) this.wrt(" selected='selected'");
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this.wrt(">"+i+"</option>");
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}
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this.wrt("</select></th>");
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this.wrt("<th><a href='javascript:Calendar.makeCalendar("+(next_month_year)+","+(next_month)+");' title='"+this.month_names[next_month]+" "+(next_month_year)+"'>></a></th></tr>");
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this.wrt("<tr class='header'>");
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for(var weekday=0; weekday<7; weekday++) this.wrt("<td>"+this.weekdays[weekday]+"</td>");
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this.wrt("</tr>");
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//Get the first day of this month
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var first_day = new Date(year,month,1);
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var start_day = first_day.getDay();
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var d = 1;
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var flag = 0;
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//Leap year support
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if(year % 4 == 0) this.month_days[1] = 29;
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else this.month_days[1] = 28;
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var days_in_this_month = this.month_days[month];
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//Create the calender
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for(var i=0;i<=5;i++) {
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if(w >= days_in_this_month) break;
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this.wrt("<tr>");
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for(var j=0;j<7;j++) {
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if(d > days_in_this_month) flag=0; //If the days has overshooted the number of days in this month, stop writing
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else if(j >= start_day && !flag) flag=1;//If the first day of this month has come, start the date writing
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if(flag) {
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var w = d, mon = month+1;
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if(w < 10) w = "0" + w;
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if(mon < 10)mon = "0" + mon;
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//Is it today?
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var class_name = '';
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var yea = this.today.getYear();
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if(yea < 1900) yea += 1900;
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if(yea == year && this.today.getMonth() == month && this.today.getDate() == d) class_name = " today";
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if(day == d) class_name += " selected";
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class_name += " " + this.weekdays[j].toLowerCase();
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this.wrt("<td class='days"+class_name+"'><a href='javascript:Calendar.selectDate(\""+year+"\",\""+mon+"\",\""+w+"\")'>"+w+"</a></td>");
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d++;
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} else {
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this.wrt("<td class='days'> </td>");
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}
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}
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this.wrt("</tr>");
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}
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this.wrt("</table>");
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this.wrt("<input type='button' value='Cancel' class='calendar-cancel' onclick='Calendar.hideCalendar();' />");
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document.getElementById(this.opt['calendar']).innerHTML = this.data.join("");
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this.data = [];
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},
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/// Display the calendar - if a date exists in the input box, that will be selected in the calendar.
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showCalendar: function() {
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var input = document.getElementById(this.opt['input']);
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//Position the div in the correct location...
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var div = document.getElementById(this.opt['calendar']);
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var xy = this.getPosition(input);
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var width = input.clientWidth||input.offsetWidth;
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div.style.left=(xy[0]+width+10)+"px";
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div.style.top=xy[1]+"px";
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// Show the calendar with the date in the input as the selected date
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var existing_date = new Date();
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var date_in_input = input.value.replace(/\s+.*$/, ''); //Remove time
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if(date_in_input) {
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var selected_date = false;
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var date_parts = date_in_input.split("-");
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if(date_parts.length == 3) {
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date_parts[1]--; //Month starts with 0
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selected_date = new Date(date_parts[0], date_parts[1], date_parts[2]);
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}
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if(selected_date && !isNaN(selected_date.getYear())) { //Valid date.
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existing_date = selected_date;
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}
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}
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var the_year = existing_date.getYear();
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if(the_year < 1900) the_year += 1900;
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this.makeCalendar(the_year, existing_date.getMonth(), existing_date.getDate());
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document.getElementById(this.opt['calendar']).style.display = "block";
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_calendar_active_instance = this;
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},
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/// Hides the currently show calendar.
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hideCalendar: function(instance) {
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var active_calendar_id = "";
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if(instance) active_calendar_id = instance.opt['calendar'];
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else active_calendar_id = _calendar_active_instance.opt['calendar'];
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if(active_calendar_id) document.getElementById(active_calendar_id).style.display = "none";
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_calendar_active_instance = {};
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},
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/// Setup a text input box to be a calendar box.
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set: function(input_id) {
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var input = document.getElementById(input_id);
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if(!input) return; //If the input field is not there, exit.
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if(!this.opt['calendar']) this.init();
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var ths = this;
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input.onclick=function(){
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ths.opt['input'] = this.id;
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ths.showCalendar();
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};
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},
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/// Will be called once when the first input is set.
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init: function() {
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if(!this.opt['calendar'] || !document.getElementById(this.opt['calendar'])) {
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var div = document.createElement('div');
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if(!this.opt['calendar']) this.opt['calendar'] = 'calender_div_'+ Math.round(Math.random() * 100);
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div.setAttribute('id',this.opt['calendar']);
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div.className="calendar-box";
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document.getElementsByTagName("body")[0].insertBefore(div,document.getElementsByTagName("body")[0].firstChild);
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}
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}
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}
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