How to hide report region?

Hi All,
In my application i am uisng the serach visibility concept when i am click on Search link i am displaying the another report as message, since they have not entered or selected any thing before clicking on serach button.
<{font size="7" color="red"> No Data Found for Search Criteria. Please <{a href="f?p=&APP_ID.:6:&SESSION.::NO:"> Click here </a>} to re-enter serach criteria!! <{/font>
Now when this message comes they will click here uisng the above message during that this region should hide and only first region should be visisble. For this i have tried like this
<{font size="7" color="red"> No Data Found for Search Criteria. Please <{a href="f?p=&APP_ID.:6:&SESSION.::NO:P6_HIDE:hide"> Click here </a>} to re-enter serach criteria!! <{/font>
But it it throwing error as "Unable to find item ID for item "'show'" in application. How to resolve this problem.
Or
Is they any othet way insted of displaying the report can i show in popu message staying no data found.
Thanks,
Anoo..

Hi,
You can use javascript alert message or some modal popup message (plugin or your own)
Just create a condition when the actions should be fired. (in your case: click on search button + some_fields are empty / not clicked)
Regards
J :D

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