As far as centering goes, there are some things you can change.
Around line 252 you have this:
<div id="Table_01"style="position: relative; width:100%; left: 15%;">
Change that to just this:
<div id="Table_01">
Then change its styling to this:
#Table_01 {
position:relative; /* so absolutely positioned child elements will move with it as it centers within wider and narrower windows */
width:1000px;
height:725px;
margin:0 auto; /* left and right auto margins center the element if it has a width */
}
For this to work in IE you also need a complete and valid doctype (such as the one below) before your opening html tag, as the very first line in your code. No blank lines above it.
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">