strange error

[forcer]

i have a page.

in the <title> </title> tags you can have the title of the page ie

<title>your website - home</title>

-

i have my links as something like:

index.php?p=contact

and in the title i have something like:

<title>your website - <?=$_GET[p]?></title>

this gets whats at p and displays it in the title so it would look like:

your website - contact

BUT

when a user first enters my url.. eg. www.mysite.com/

there is no index.php?p=page till the user clicks a page.

i think its because of this i am getting an error:

<br />
<b>Notice</b>: Use of undefined constant p - assumed 'p' in <b>c:\program files\easyphp1-7\www\img\index.php</b> on line <b>13</b><br />
<br />
<b>Notice</b>: Undefined index: p in <b>c:\program files\easyphp1-7\www\img\index.php</b> on line <b>13</b><br />

in the title bar

i cant seem to fix it... when the user enters the site there wont be no ?p=page so how can i get it to display home automatically and change when they click a different page

[Kudose]

<title><? if(!$_GET['p']){ echo "Your website - Home"; } else { echo "Your website -".$_GET['p'];} ?></title>

[mtimdog]

or

<title>Your website - <? echo (isset($_GET['p']))?$_GET['p']:'Home'; ?></title>