The if_search tag is a conditional tag and always used as an opening and closing pair, like this…
<txp:if_search> ...conditional statement... </txp:if_search>
The tag will execute the contained statements if the called page is the result of a search.
Select a different stylesheet during search
<txp:if_search> <link rel="stylesheet" href="<txp:css n="search" />" type="text/css" /> <txp:else /> <link rel="stylesheet" href="<txp:css />" type="text/css" /> </txp:if_search>
What this does…
Selects a stylesheet named “search” when search results are being displayed, or a stylesheet determined by the active section for normal page display.