i get a syntax error message (line 43 character 82) for this line

if (document.contest.month.selectedIndex=5 && document.contest.day.selectedIndex=31) {

what am i doing wrong here (it is an alert message if the person's birthday is the 31st of may)

javascript uses zero based arrays so the index of select options begins at 0 not one, therefore index[31] is past the end of the array.

or use .... selectedIndex.Value = 31

My first option is choose an option so is it still past the array?

AND

== is the equality operator in javascript. A single = is the assignment operator.

Thanks that got rid of the problem