Can't see reCaptcha graphics on form?

I am trying to set up reCaptcha on my website for the first time, but not sure what I am doing wrong.Because it would be too complex to move the main input form, which is integrate into verification code, i have created a script that just shows a submit button which then goes to the main php script called manage.phpHere is the submit form called mail_menu.html (reCaptcha code in red):