splash intro code problem Options

[ishowernaked]

<!-- begin code provided by createblog.com --><br /><!-- begin code provided by createblog.com --><br /><br /><script type='text/javascript'><br />// intro splash page by micron<br />// for more xanga scripts and help go to createblog.com<br /><br />// change this url to an image of your choice<br />var image = 'http://www.createblog.com/images/huddled.jpg';<br /><br />function enterSite() {<br />document.getElementById('splash').style.display = 'none';<br />var content = document.getElementsByTagName("center");<br />for (var i=0; i<content.length;i++) {<br /> content[i].style.display = 'block';<br />}<br />return false;<br />}<br /><br />if (document.title.slice(-10) == 'Xanga Site') {<br />document.write('</span></center><style type="text/css"> center {display:none;} .image {border:1px solid #dcdcdc;} </style><table height="100%" width="100%" id="splash"><tr><td align="center" valign="middle" style="text-align:center !important;"><a href="#" onclick="return enterSite();"><img src="'+ image +'" border="0" class="image"></a></td></tr></table><center><span>');<br />}<br /></script><br /><br /><!-- end code provided by createblog.com --><br /><!-- end code provided by createblog.com -->

Thats the code i uused but I can't find the place where I can change my splash intro place's background to black ---- just my splash page to black but once they enter they see everything normally... help please?