-//---------------------------------------------------------------------------------
-// Submit button.
-// $async parameter can have 3 values:
-// false - normal submit via form action
-// true - when js is on submition via ajax call
-// null - fallback button not visible in js enabled mode
-//
-function submit($name, $value, $echo=true, $title=false, $async=false)
+function submit($name, $value, $echo=true, $title=false, $async=false, $icon=false)