parse error on switch

[wolf99]

Hi All

received

Parse error: parse error, unexpected T_CONSTANT_ENCAPSED_STRING in /home/www/tobmol0.freehostia.com/indexa.php on line 44

for

<?php
							    switch($_GET[id])
								{
									case "cv":
										$title "CV"; //this is line 44.
										$main_content = "cv";
										break;
									case "library":
										$title = "Lib";
										$include = "lib.php";
										break;
									case "papps:":
										$title = "PApps";
										$include = "papps.php";
										break;
									case "art":
										$title = "Art";
										$include = "art.php";
										break;
									case "thesis":
										$title = "Thesis";
										$include = "thesis.php";
										break;
									case else:
										$title = "CV";
										$include = "cv.php";
								}
							?>

this is followed by

<?php echo $title; ?>
<?php include($main_content); ?>

then url of form

index.php?id=cv

thanks for any help only a noob to php so prob some thing very basic