/* set margins, padding, and inline-level alignment */
body { margin: 0; padding: 0; text-align: center; background: white;}

table.center {margin-left:auto; margin-right:auto;}

/* set width and float nav & ads div content boxes */
#nav		{ float: left; text-align: left; width: 200px; }
#ads		{ float: right; text-align: right; width: 200px; }

/* set side txt margins 5px >nav & ads widths */
#txt		{ margin-left: 105px; margin-right:105px }

/* ensure footer stays at the bottom */
#ftr		{ clear: both }

/* show boundaries and set image sizes - for clarity */
#hdr, #ftr, #txt	{ background: white }
#nav, #ads	{ background: white }

#hdr img	{ width: 540px; height: 126px }
#ads img	{ width: 75px; height: 100px }
#txt img	{ width: 150px; height: 150px }