function buttonIndex(){
if(selected == "Inside metropolitan statistical areas"){return 1}
if(selected == "Inside principal cities"){return 2}
if(selected == "Outside principal cities"){return 3}
if(selected == "Outside metropolitan statistical areas"){return 4}
if(selected == "Northeast"){return 5}
if(selected == "Midwest"){return 6}
if(selected == "South"){return 7}
if(selected == "West"){return 8}
if(selected == "15-24"){return 9}
if(selected == "25-29"){return 10}
if(selected == "30-34"){return 11}
if(selected == "35-39"){return 12}
if(selected == "40-44"){return 13}
if(selected == "45-49"){return 14}
if(selected == "50-54"){return 15}
if(selected == "55-59"){return 16}
if(selected == "60-64"){return 17}
if(selected == "65-69"){return 18}
if(selected == "70-74"){return 19}
if(selected == "75+"){return 20}
if(selected == "Householder"){return 21}
if(selected == "Spouse of householder"){return 22}
if(selected == "Child of householder"){return 23}
if(selected == "Other relative of householder"){return 24}
if(selected == "Less than 9th grade"){return 25}
if(selected == "9th to 12th grade no diploma"){return 26}
if(selected == "High school graduate (includes equivalency)"){return 27}
if(selected == "Some college no degree"){return 28}
if(selected == "Associate degree"){return 29}
if(selected == "Bachelor's degree or more"){return 30}
if(selected == "Bachelor's degree"){return 31}
if(selected == "Master's degree"){return 32}
if(selected == "Professional degree"){return 33}
if(selected == "Doctorate degree"){return 34}
}