"

From 2013.igem.org

<script type="text/javascript"> var month = new Date().getMonth(); var year = new Date().getFullYear(); var cal_table = ; var days_in_month = new Array(31,28,31,30,31,30,31,31,30,31,30,31);

Date.prototype.getWeek = function() {

 var onejan = new Date(this.getFullYear(),0,1);
 return Math.ceil((((this - onejan) / 86400000) + onejan.getDay()+1)/7);

}

function calendar() {

 var m = month+1;
 var date = new Date();    
 var today = date.getDate();     
 cal_table = ;  

  if(year<=200)
  {
   year += 1900;
  } 
  months = new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December');
  var weekDay = new Array('Mon', 'Tue', 'We', 'Thu', 'Fri', 'Sat', 'Sun');
  days_in_month = new Array(31,28,31,30,31,30,31,31,30,31,30,31);
  
    if(year%4 == 0 && year!=1900)
 {
     days_in_month[1]=29;
    }
  
   total = days_in_month[month];
   var date_today = months[month]+' '+year;

cal_table = cal_table + '<tbody id="cal_body">'; cal_table = cal_table + '';

   week = 0;
 
   var first_week_day = new Date(year, month, 0).getDay();
 
   for(week_day = 0; week_day < first_week_day; week_day++) 
   {

cal_table = cal_table +'';

     week++;
   }
   
for(i=1;i<=total;i++)
   {
       if(week==0)
       {

cal_table = cal_table + ''; } if(today==i && month == date.getMonth() && year == date.getFullYear()) { cal_table = cal_table +'';

       }
   
       else
       {

cal_table = cal_table +'';

       }
   
       week++;
       if(week==7)
       {
 var weeknr = new Date(year, month, i-1).getWeek();

cal_table = cal_table + ''; cal_table = cal_table + ''; week=0; } } for(i=1;week!=0;i++) { cal_table = cal_table + '';

               week++;
   
               if(week==7)
               {  
     if(weeknr == 53)
     {
     var weeknr = 1;
     }
     else
     {
     var weeknr = weeknr+1;
     }

cal_table = cal_table + '';

                       cal_table = cal_table + '</tr>';
                       week=0;
               }
       }

cal_table = cal_table + '</tbody>

<input id="left" type="image" onclick="left_arrow()" src="image/buttons/arrowleft.png">	'+date_today+'						<input id="right" type="image" onclick="right_arrow()" src="image/buttons/arrowright.png">
Mon	Tue	Wed	Thu	Fri	Sat	Sun	Week
<input type="submit" onclick="" value="'+i+'">	<input type="submit" onclick="" value="'+i+'">	<input type="submit" onclick="" value="'+weeknr+'">
	<input type="submit" onclick="" value="'+weeknr+'">

';

}

</script>