Iframe for google docs

google-docs.html

<script>
					// Google docs (documents viewer)
          function showDocs(oLink) {
              var oBlock = oLink.getElementsByTagName('div')[0];
              var oIframe = oLink.getElementsByTagName('iframe')[0];
              var oIframeUrl = oLink.getAttribute('url-show');
              if(oBlock.style.height == 0+'px') {
                  oBlock.style.height = 980+'px';
                  if(oIframe.src != oIframeUrl) {oIframe.src = oIframeUrl};
              } else {
                  oBlock.style.height = 0+'px';
              }
          }
			</script>

			<div url-show="http://docs.google.com/viewer?url=<?php echo $file_url; ?>&amp;embedded=true" class="show_docs" onclick="showDocs(this); return false;">
				<span>Посмотреть</span>
				<div class="file_block" style="height: 0px;">
					<iframe src="" height="980" width="620"></iframe>
				</div>
			</div>