How to overlay a small page on a html page?
<p>I have a webpage underconstruction. I want to notify the people who visit it about its under-construction nature. For that I wanted to show a small transparent or transluscent page on the above page  as shown here <a href="http://img17.imageshack.us/i/normalpagewithasmallpag.png/" rel="nofollow">http://img17.imageshack.us/i/normalpagewithasmallpag.png/</a></p>

<p>You may notice that i want that page to appear at the center of the webpage overlayed on the original page with a cross at top-right corner. Clicking on that cross may close this small page revealing the page behind it so that the users may see what has been developed so far.</p>

<p>I hope you guys have some suggestions for me. I know its possible with javascript but don't know how...any tutorial if available will also help. </p>

<p>Thanks a lot.</p>
