Here are some key features of "Easiest Validate On Submit":
· The script detects whether you have a div to display errors. If you haven't, it puts messages in alert boxes.
· Evos supports styling both the input widgets and the labels upon validation errors.
· Which fields to validate, and which validation (required field, email, numeric) to use, is completely controlled through CSS classes.
· Pluggable custom validation per field, with minimal amounts of code.
· Messages are located in language files, so it's easy to display messages in your native language.
· Everything can be styled using CSS.