id="link-add-field-source"pattern="(\*|.*://?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*))"requiredtitle="i.e. http://mysite.ch or *"/>
id="link-add-field-destination"pattern="(\*|.*://?[-a-zA-Z0-9@:%._\+~#=]{1,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*))"requiredtitle="i.e. http://mysite.ch or *"/>