If you don't wish to use a popup, you can choose to render the checkout to an element within your page. To do this, use Tebex.checkout.render() instead of Tebex.checkout.launch():
Tebex.checkout.init({ ident:"your checkout request ident goes here",});Tebex.checkout.render(// The element to render todocument.getElementById("some-element");// The width of the checkout iframe, in pixels500,// The height of the checkout iframe, in pixels600// Boolean indicating whether you want to open a new tab on mobile// (defaults to true if unspecified)false);