I added a source code for a Site Submission box. This code allows you to add a website submission box to any web page and allow your visitors to submit to the major search engines like Google, Yahoo, Bing...etc. Below is a working example of the box. Please visit link to download the source code. Add Site Submit Site Box.
You can add a Voice Search Box to your site by adding a little Google Code. Try out the Live Demo Below. Google uses the speech input tribute x-webkit-speech which then transcribes the speech to text. Click on the microphone icon and speak into your microphone clearly.
You can download the source code from the link above. This Voice Search Box only works with Google chrome.
CSS Rounded Corners Give a nice Look, however when you ad a shadow box too it I think it even looks better yet. I created a page here on CSS Rounded Corners With Shadow Box with the instructions. Check out example below. You can change the attributes to fit your liking. Get and modify the source code from link above.