i am working on a calendar and i have it set up so that you can cyclye throuhg the months and i want it to change the year as well like if its january of 2007 and you hit prev i want it to become december of 2006.

i have the calendar working completely with the next and prev links working to a point it changes the month ok and i managed to get it to chnage the year when you go from december to january, however for some reason it will not change the year when i go from january to december, even though i used the exact same method to accomplish both.

this is the code i used to accomplish the month switch
PHP Code:
if(empty($_GET['month'])){
    $today1 = getdate(); 
        $month=$today1['mon'];
}else{$month=$_GET['month'];}
            
if(empty($_GET['year'])){
    $today2 = getdate(); 
    $year=$today2['year'];
}else{$year=$_GET['year'];}
            
if($month==0){
    $month=12;
    $year--;
}
            
if($month==13){
    $month=1;
    $year++;
}
            
fWriteCalendar(fGetEvents(),$month,$year); 
this is the part of the calendar write function that handles it

PHP Code:
function fWriteCalendar($vResults,$vMonth,$vYear){

$today  = getdate();
$temp1 = getdate(mktime(0,0,0,$vMonth,1,$vYear));
$temp2 = getdate(mktime(0,0,0,$vMonth+1,0,$vYear));
$introoffset = $temp1['wday'];
$closeoffset = $temp2['wday'];
$days=$temp2['mday'];
$month=$temp1['month'];
$prevmonth  = $vMonth-1;
$nextmonth  = $vMonth+1;
 $vCalendar= '
<a href="calendar.php?month='.$prevmonth.'&year='.$year.'"><<</a>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Calender of Events for '
.$month.'-'.$vYear.
'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a href="calendar.php?month='.$nextmonth.'&year='.$year.'">>></a>; 
if anyone can help me figure out why the year will not decrease from january to december it would help alot.