How can I delete/remove a local uploaded file with the input type "file".

With the code below I can upload multiple files, but before registration, I woull like to remove the "no chosen files" :

 
					<script>
							function handleFileSelect(evt) {
							var files = evt.target.files; // FileList object
 
							// Loop through the FileList and render image files as thumbnails.
							for (var i = 0, f; f = files[i]; i++) {
								// Only process image files.
								if (!f.type.match('image.*')) {
									continue;
								}
 
								var reader = new FileReader();
								// Closure to capture the file information.
 
								reader.onload = (function(theFile) {
									return function(e) {
										// Render thumbnail.
										var span = document.createElement('span');
										span.innerHTML = ['<div style="display:inline-block; width:200px; height:220px; line-height: 220px; vertical-align:top; border:1px solid #CCCCCC; text-align:center; margin: 10px 10px 10px 10px; padding: 5px 5px 5px 5px; box-shadow: 5px 5px 8px #aaa;"><p><img class="thumb" src="', e.target.result, '" title="', 
										escape(theFile.name), '" width="150px"/></p><p><a href="#" title="Supprimer" id="deleteFiles"><input type="hidden" value="fileName" name="fileName" class="fileName"><span class="heydings_icons_3" style="float:right;">X</span></a></p></div>'].join('');
										document.getElementById('list').insertBefore(span, null);
									};
								})(f);
 
								// Read in the image file as a data URL.
								reader.readAsDataURL(f);
							}
 
						 }
 
						 document.getElementById('files').addEventListener('change', handleFileSelect, false);
 
 
	$("#files").change(function(){
        var fileName = $("#fileName").val();
		alert(fileName);
 
    });

Thank you