[jQuery] Keep the focus on field with validation error

[jQuery] Keep the focus on field with validation error


Hi folks!!
I'm working with ajax validation in a sign in form. My validation is
perfect, but I need to back focus to previous field, if validation
against previous field return false.
I'd tried something like this:
$("#myInput").blur(function(){
// All validation code
if(!valid){
$(this).focus();
}
})
But not working...
Some ideas??