user opens page: show no image after the input field
invalid input: show a red sign
valid input: show a green sign how would I do that?
details: when using s:decorate you can use the vars invalid and required inside of the template but how I can find out (in the template), if this is the very first time, that the page is being rendered?
more details: when the page is rendered for the first time, invalid will be false for all input fields (which is strictly speaking not really correct for e.g. required fields)