How to pass javascript variables into php?

[Quevas]

I've made an "ok/cancel" msgbox in javascript and I need to store the result in a php variable, is it possible?

[bastien]

and autosubmit the form w/ js...

[jnuneznyc]

//Here is a way to submit to yourself from JS to PHP
location.href='{$PHP_SELF}?varname='+varvalue;