<script type="text/javascript">
			function toggleDisplayBlock(idOf)
			{
				var element = document.getElementById(idOf);
				if (element != undefined)
				{
					if (element.style.display == 'none')
					{ element.style.display = 'block'; }
					else
					{ element.style.display = 'none'; }
				}
			}
			function upload_progress()
			{
				toggleDisplayBlock('upload_message');
				toggleDisplayBlock('submit_message');
				return true;
			}
</script>
