How do I make javascript put value into form input fields?

Hi there!
I have this website where i per vimeo username load my videos.
If I click one of these videos the below code loads a vimeo movie in this div id="embed".

Now thats fine.

But I would like for it to ALSO take some additional values and populate several input fields in my form.

So besides making the div with the id="embed, I would like for it to also put the vimeo attribute title into a form input text with an id ="vtitle". E.g.

<input name="vtitle" type="text" required id="vtitle" form="item-new" placeholder="Movie Title" tabindex="1" value="[b]??????[/b]">

Select allOpen in new window

And more of the same. But I guess, that once I learn how to populate one input , I will see how to copy that for other input fields.

<script>

		// Tell Vimeo what function to call
		var oEmbedCallback = 'embedVideo';

		// Set up the URL
		var oEmbedUrl = 'http://vimeo.com/api/oembed.json';

		// Load the first one in automatically?
		var loadFirst = true;

		// This function puts the video on the page
		function embedVideo(video) {
			var videoEmbedCode = video.html;
			document.getElementById('embed').innerHTML = unescape(videoEmbedCode);
		}

		// This function uses oEmbed to get the last clip
		function latestVideo(video) {


		}
		// Something Sofus is working on!, not any effect
		function setupGallery(videos) {
    // 0 = 1st video
    getVideo(videos[0].url);                 

			var videoID = videos[0].id;
			var videoTitle = videos[0].title;
			var videoDesc= videos[0].description;
			var videoDur = videos[0].duration;
			var videoImg = videos[0].thumbnail_large;

    for (var i = 0; i < videos.length; i++) {
        var html = '<li><a href="' + videos[i].url + '"><img src="' + videos[i].thumbnail_large + '" class="thumb" />';
        html += '<p class="tdesc"> <span class="title">' + videos[i].title + '</span> <br /><br />';
        html += '<span class="ddesc">' + videos[i].description + '</span></p></a>';
        $('#embed').append(html);
    }                                     
}

		// This function runs when the page loads and adds click events to the links
		function init() {
			var links = document.getElementById('thumbs').getElementsByTagName('a');

			for (var i = 0; i < links.length; i++) {
				// Load a video using oEmbed when you click on a thumb
				if (document.addEventListener) {
					links[i].addEventListener('click', function (e) {
						var link = this;
						loadScript(oEmbedUrl + '?url=' + link.href + '&callback=' + oEmbedCallback);
						e.preventDefault();
					}, false);
				}
				// IE (sucks)
				else {
					links[i].attachEvent('onclick', function (e) {
						var link = e.srcElement.parentNode;
						loadScript(oEmbedUrl + '?url=' + link.href + '&callback=' + oEmbedCallback);
						return false;
					});
				}
			}
			

		

			// Load in the first video
			if (loadFirst) {
				loadScript(oEmbedUrl + '?url=' + links[0].href + '&callback=' + oEmbedCallback);
			}
		}

		// This function loads the data from Vimeo
		function loadScript(url) {
			var js = document.createElement('script');
			js.setAttribute('src', url);
			document.getElementsByTagName('head').item(0).appendChild(js);
		}


		// Call our init function when the page loads
		window.onload = init;
		
		

	</script>

Select allOpen in new window

And please help me by posting the entire code snippet. Cause my javascript is not very good, and I still have to look forward to the day of grasping javascript logic.
Thank you
Sofus
Sk-rmbillede-2014-02-06-kl.-23.1.png