Undefined Variable

$nav['ItemSep'] = ":";
$nav['ItemPrefix'] = "<<";
$nav['ItemEnd'] = ">>";


//in me functions.inc.php staat dit:


function Get_Nav() {
	$query = 'SELECT * FROM menu_nav ORDER BY id';
	$resultaat = mysql_query($query) or die();
	$obj = msql_fetch_object($resultaat);
	$bericht = $obj->Navigation;
}
 

//en in me index.php staat dit:


<?php
	echo $nav['ItemPrefix'].$bericht.$nav['ItemEnd'].$nav['ItemSep'];
	?>

$nav['ItemSep'] = ":";
$nav['ItemPrefix'] = "<<";
$nav['ItemEnd'] = ">>";
 
 
//in me functions.inc.php staat dit:
 
 
function Get_Nav() {
	$query = 'SELECT * FROM menu_nav ORDER BY id';
	$resultaat = mysql_query($query) or die();
	$obj = msql_fetch_object($resultaat);
	$bericht = $obj->Navigation;
}
 
 
//en in me index.php staat dit:
 
 
<?php
	echo $nav['ItemPrefix'].$bericht.$nav['ItemEnd'].$nav['ItemSep'];
	?>