<%-- Using conditional statements to ensure there are not blank space prefixed or suffixed to the attribute values --%> <% if $Message && $Description %> aria-describedby="message-$ID describes-$ID" <% else_if $Message %> aria-describedby="message-$ID" <% else_if $Description %> aria-describedby="describes-$ID" <% end_if %> <% if $Title && $RightTitle %> aria-labelledby="title-$ID extra-label-$ID" <% else_if $Title %> aria-labelledby="title-$ID" <% else_if $RightTitle %> aria-labelledby="extra-label-$ID" <% end_if %>