Countdown and redirect is off by like 1 sec

[Humper]

I cant figure out why my redirect is off by about 1 sec from my countdown... I have both scripts in the body of the page... this seems to help because I tried to have the redirect in the header and it was off from the countdown by like 2-3 sec...

here is the redirect code (this is in a php file)

print "<script type=\"text/javascript\">"."\n";
			print "window.onload=WindowLoad;"."\n";
			print "function WindowLoad(event)"."\n";
			print "{"."\n";
			print "setTimeout(\"location = 'EquipReport.php';\", 20000);"."\n";
			print "}"."\n";
			print "</script>"."\n";

here is the countdown code

print "<form name='counter'><input type='text' size='6' name='d2' disabled style='border:0px; bgcolor:#FFFFFF;'></form> "."\n"; 
			print "<script>"."\n"; 
			print "<!--"."\n";
			print "//"."\n"; 
			print " var milisec=0"."\n"; 
			print " var seconds=20"."\n"; 
			print " document.counter.d2.value='20'"."\n";  
			print " function display(){"."\n"; 
			print " if (milisec<=0){"."\n"; 
			print "	milisec=9"."\n"; 
			print "	seconds-=1"."\n";  
			print " }"."\n"; 
			print " if (seconds<=-1){"."\n"; 
			print "	milisec=0"."\n"; 
			print "	seconds+=1"."\n"; 
			print " }"."\n"; 
			print " else"."\n";  
			print "	milisec-=1"."\n"; 
			print "	document.counter.d2.value=seconds+\".\"+milisec"."\n"; 
			print "	setTimeout(\"display()\",100)"."\n"; 
			print "} "."\n"; 
			print "display()"."\n"; 
			print "--> "."\n";
			print "</script>"."\n";

anyone know why it is off?

[blm126]

That is the difference between when the each section of code is executed.

[Humper]

is there a way to combind the two so that when it reaches 0.0 it redirects? I cant figure out how to do that