function date (form){
var Serial=form.inputbox.value;
if(Serial<=0)
	{Message="That was an invalid serial number";Year="";}
else{Message="Your Winchester 1887 was manufactured in ";
if(Serial<=7431)
	{Year=1887;}
else{
if(Serial<=22408)
	{Year=1888;}
else{
if(Serial<=25673)
	{Year=1889;}
else{
if(Serial<=29105)
	{Year=1890;}
else{
if(Serial<=38541)
	{Year=1891;}
else{
if(Serial<=49763)
	{Year=1892;}
else{
if(Serial<=54367)
	{Year=1893;}
else{
if(Serial<=56849)
	{Year=1894;}
else{
if(Serial<=58289)
	{Year=1895;}
else{
if(Serial<=60175)
	{Year=1896;}
else{
if(Serial<=63952)
	{Year=1897;}
else{
if(Serial<=64855)
	{Year=1898;}
else{Message="That was an invalid serial number";Year="";}
}}}}}}}}}}}}
alert (Message + Year+".");
}