function date (form){
var serial=form.inputbox.value;
if(serial<=0)
	{message="That was an invalid serial number";year="";}
else{
message="Your Winchester Model 1903 was manufactured in ";
if(serial<=6944)
	{year="1903 or 1904";}
else{
if(serial<=14865)
	{year=1905;}
else{
if(serial<=23097)
	{year=1906;}
else{
if(serial<=31852)
	{year=1907;}
else{
if(serial<=39105)
	{year=1908;}
else{
if(serial<=46496)
	{year=1909;}
else{
if(serial<=54298)
	{year=1910;}
else{
if(serial<=61679)
	{year=1911;}
else{
if(serial<=69586)
	{year=1912;}
else{
if(serial<=76732)
	{year=1913;}
else{
if(serial<=81776)
	{year=1914;}
else{
if(serial<=84563)
	{year=1915;}
else{
if(serial<=87148)
	{year=1916;}
else{
if(serial<=89501)
	{year=1917;}
else{
if(serial<=92617)
	{year=1918;}
else{
if(serial<=96565)
	{year=1919;}
else{
if(serial<=97650)
	{year="1920 or 1921";}
else{
if(serial<=99011)
	{year=1922;}
else{
if(serial<=100452)
	{year=1923;}
else{
if(serial<=101688)
	{year=1924;}
else{
if(serial<=103075)
	{year=1925;}
else{
if(serial<=104230)
	{year=1926;}
else{
if(serial<=105537)
	{year=1927;}
else{
if(serial<=107157)
	{year=1928;}
else{
if(serial<=109414)
	{year=1929;}
else{
if(serial<=111276)
	{year=1930;}
else{
if(serial<=112533)
	{year=1931;}
else{
if(serial<=112992)
	{year=1932;}
else{
if(serial<=114926)
	{year="1933, 1934, 1935, or 1936";}

else{message="That was an invalid serial number";year="";}
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
alert (message + year +".");
}