ما هو حل مشكلة SyntaxError: Unexpected token 'else' ؟

الكود التالي لا يعمل:

var experience;
var maried;

write("Enter years of experience: ");
experience = read();

write("Are you married (yes/no): ");
maried = read();

if (experience >= 1) 
{ 
    if (maried == "yes")
    {
        write("accept 100"); 
    }
    else if (maried == "no");
    {
        write("accept 80");
    }
    else
    {   
        write("Error: your answer can be 'yes' or 'no' only");
    }
}

يظهر لي الخطأ التالي عند الشتغيل:

SyntaxError: Unexpected token 'else'