Need Calculator/SRK/Captcha

I need a programmer very skilled on PHP,Javascript and HTML to make theses three works to my website. The works will be delivered on .html and .js ( javascript ) files expect of the Captcha verification that will be installed on the script ( php files ) i have the right to ask for any changes after i see a full working demo of every feature. 1- Income calculator - calculate profit,income according to invested amount - 2- Virtual keyboard (SRK) to enter passwords securely on login box. 3- Captcha ( verification image on every page need that ) I have screenshots and links to all references needed. The max budget was 40$ . Happy bid,