Tabindex Example

I'm sorry, that is not a properly formatted ZIP code. ZIP must be 5 or 9 digits. Please try again.

 

 

 

JavaScript Code

function checkzip(s)
{
errormessage=document.getElementById("invalidzip");
// Check for correct zip code
reZip = new RegExp(/(^\d{5}$)|(^\d{5}-\d{4}$)/);
if (!reZip.test(s)) {
errormessage.style.display="block";
errormessage.tabIndex="-1";
setfocus('invalidzip')
}
else {
errormessage.style.display="none";
}
}

function setfocus(e) {
el=document.getElementById(e);
el.focus();
}