Session IDs and links...

Hello, I have finally figured out sessions a little bit better... but I have a question... is there a way to pass the Session ID on to the next page via a simple link without placing the session ID in the URL... if there were a form the session ID is automatically placed as a hidden input inside the form... but if there is no form, it can only be sent via the URL in the <a> tag... is there a way to send via a simple link it without placing it in the URL (and without using cookies)... I was thinking maybe sending an HTTP header or something. There is no way to submit form information without a submit button or enter being pressed is there? Thanks, SJK