PHP/HTML Question

I have a quick question about PHP and HTML. I have a page that is supposed to update the "status" of hosts by pinging each host and displaying the result. I would like to get the page to the point that I can have something (either PHP or JavaScript or the like) ping every 10 seconds or so and update the page (I have text boxes for the status) WITHOUT reloading it. Does anyone know if this is possible with PHP? Or does anyone know of another way I could do it? JavaScript (at least any of it that I've seen) doesn't have a function to run a command on the server (which makes sense, since it is mainly client-side), and I don't know about CGI. Thanks, Nick -- You can't make a difference until you are willing to be different! -- Nick Couchman SEAKR Engineering, Inc. 6221 South Racine Circle Centennial, CO 80111 Direct: (303) 784-7724 Main: (303) 790-8499 Fax: (303) 790-8720