Creating a wordpress plugin to enable hiding information on

My site is avelim.co.il. The site is on Hebrew wordpress 3.3, using the theme Weaver 2.2.6 with many customization done by programmers. 3. In posts, like this for example [login to view URL] here is a black line at the bottom, and underneath publication date and category. I want to be able to check a box in specific posts that will allow me to hide this area. See [login to view URL] For this I want a custom plugin to be created. Applicant should submit a screenshot of the administration panel of the plugin. The plugin will be tested on a test site before installing it on the live site. The project should be completed within 48 hours of being awarded the project