Funky image stuff...

I am just starting to explore the image functions within PHP. Here's a sample of code that creates (or really just duplicated) the original picture. <? Header("Content-type: text/html"); $im = imagecreatefromjpeg("A-006.jpg"); Imagejpeg($im,'',100); $width = imagesx($im); $height = imagesy($im); echo "Width: $width"; echo "Height: $height"; ?> How come this doesn't create any html, and won't echo the $height, and $width? It looks like it will just create a .jpg that can only be displayed on a page by itself? My main goal is to take a .jpg uploaded by a user and limits it's display size to less than 150px. TIA, Shane