Php sessions switch image -

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this question exact duplicate of:

i have home button on website, home button image of house. want make website userfriendly website. if clicking on button home button changing color , opens homepage. person knows on page he/she is. code far.

the problem of script it won't switch image i'm not expert in php sessions scripting, me out? searched google , couldn't find related question.

    <?php         session_start();         $_session['1'] = $_get["active"];         if (!empty($_get["active"])){ ?>             <a href="<?php echo $this->createurl("/admin/survey/sa/index")."home"; ?>">             <img src='<?php echo $simageurl;?>home1.png' alt='<?php $clang->et("default administration page");?>' width='<?php echo $iconsize;?>' height='<?php echo $iconsize;?>'/></a>         <?php         }          else{?>             <a href="<?php echo $this->createurl("/admin/survey/sa/index").""  ?>">             <img src='<?php echo $simageurl;?>home.png' alt='<?php $clang->et("default administration page");?>' width='<?php echo $iconsize;?>' height='<?php echo $iconsize;?>'/></a>         <?php         }         ?>

well, don't know, need session for. seams useless, if "read" $_get array. don't know query string state, try:

if (isset($_get["active"])) {     ... }

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