Simple test page for web loading
all delays are in milliseconds, and all redirects are integers.

php url param will use php to wait server-side (max 600000 ms or 10 minutes)
after server-side delay specified by php, php_redirect, if present, will be decremented and page will be redirected. (max 10 redirects)

js url param will use javascript to wait client-side (blocking wait @ loading)
async url param will use javascript to async wait client-side (non-blocking wait @ loading)
onload url param will add onload tag to body to wait client-side (blocking wait @ complete)
after client-side delay specified by js, js_redirect, if present, will be decremented and page will be redirected.
same will be done for async_func_redirect, and onload_redirect.

iframe url param will add iframe with server-side delay (non-blocking wait @ interactive)
image url param will add image with server-side delay (non-blocking wait @ interactive)

php param: unset
php_redirect param: unset
js param: unset
js_redirect param: unset
async_func param: unset
async_func_redirect param: unset
onload param: unset
onload_redirect param: unset
iframe param: unset
image param: unset

document.readyState = complete