function date (form){
var serial=form.inputbox.value;
if(serial<=0)
	{message="That was an invalid serial number";year="";}
else{
message="Your Winchester Model 1892 was manufactured in ";
if(serial<=23701)
	{year=1892;}
else{
if(serial<=35987)
	{year=1893;}
else{
if(serial<=73508)
	{year=1894;}
else{
if(serial<=106721)
	{year=1895;}
else{
if(serial<=144935)
	{year=1896;}
else{
if(serial<=159312)
	{year=1897;}
else{
if(serial<=165431)
	{year=1898;}
else{
if(serial<=171820)
	{year=1899;}
else{
if(serial<=183411)
	{year=1900;}
else{
if(serial<=191787)
	{year=1901;}
else{
if(serial<=208871)
	{year=1902;}
else{
if(serial<=253935)
	{year=1903;}
else{
if(serial<=278546)
	{year=1904;}
else{
if(serial<=315425)
	{year=1905;}
else{
if(serial<=376496)
	{year=1906;}
else{
if(serial<=437919)
	{year=1907;}
else{
if(serial<=476540)
	{year=1908;}
else{
if(serial<=522162)
	{year=1909;}
else{
if(serial<=586996)
	{year=1910;}
else{
if(serial<=643483)
	{year=1911;}
else{
if(serial<=694752)
	{year=1912;}
else{
if(serial<=742675)
	{year=1913;}
else{
if(serial<=771444)
	{year=1914;}
else{
if(serial<=804622)
	{year=1915;}
else{
if(serial<=830031)
	{year=1916;}
else{
if(serial<=853819)
	{year=1917;}
else{
if(serial<=870942)
	{year=1918;}
else{
if(serial<=903649)
	{year=1919;}
else{
if(serial<=906754)
	{year=1920;}
else{
if(serial<=910476)
	{year=1921;}
else{
if(serial<=917300)
	{year=1922;}
else{
if(serial<=926329)
	{year=1923;}
else{
if(serial<=938641)
	{year=1924;}
else{
if(serial<=954997)
	{year=1925;}
else{
if(serial<=973896)
	{year=1926;}
else{
if(serial<=990883)
	{year=1927;}
else{
if(serial<=996517)
	{year=1928;}
else{
if(serial<=999238)
	{year=1929;}
else{
if(serial<=999730)
	{year=1930;}
else{
if(serial<=1000727)
	{year=1931;}
else{
if(serial<=1001324)
	{year=1932;}
else{message="That was an invalid serial number";year="";}
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
alert (message + year +".");
}