[RESOLVED] Countdown help

I've got a script that counts down to a certain date, the problem I'm having is when the date has past the countdown message still shows, I want it to show another message when the date has past, heres what I've done so far:-

PHP Code:

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<?php

$day = 30; 

$month = 06;

$year = 2007;

$target = mktime(0,0,0,$month,$day,$year); 

$days = ($usedtime - ($usedtime % 86400)) / 86400; 

$usedtime = $usedtime - ($days * 86400); 

$hours = ($usedtime - ($usedtime % 3600)) / 3600; 

$usedtime = $usedtime - ($hours * 3600); 

$minutes = ($usedtime - ($usedtime % 60)) / 60; 

$usedtime = $usedtime - ($minutes * 60); 

$seconds = ($usedtime - ($usedtime % 1)) / 1; 

if ($day < "0"){
$txt = "This offer has now finished.";
} else {
$txt = "This offer will end in $days days, $hours hours, $minutes minutes, and $seconds seconds.";
}
printf("<font face=\"$font_type\" size=\"$font_size\" >$bolda $txt $boldb</font>"); 
?>

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In between

Code:

---

$day=30

---

and

Code:

---

if ($day < "0")

---

value of $day has not changed. So , it will always be 30, thereby satisfying only the "else" condition.

Thanks fixed it :)