passing a php smarty varable to the tpl page before it is compiled

I have a php page say abc.php which has a tpl page that is compiled off the abc.tpl which cretes abc.tpl.php and i have a varable $_GET['sel'];
and am trying to access this varable in a if statment ie
{if $_GET['sel']  == 'lib'}  ****** this syntax is not correct but what i need how to extract the passed varable to a pre compiled tpl page this the correct synatax to extract the varable $_GET['sel']

{ /if}
but cannot get the program to compile and if i can get it to compile i cannot access the varable.
any ideas pleaes
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Sudaraka WijesingheWeb Application ProgrammerCommented:
I think what you are looking for is $smarty.get
See for more details.

{if $smarty.get.sel == 'lib'}
	{* do something here *}

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sydneyguyAuthor Commented:
bingo perfect thanks for the imput exactly what i was looking for
Sudaraka WijesingheWeb Application ProgrammerCommented:
Glad to help. Thanks for the points.
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