Remove 10px from margin here this will be at the very top in your CSS file.

Notice I made the part you need to remove bold.

Code:
body {
	margin: 10px 0;
	font-family: verdana, arial, helvetica, sans-serif;
	font-size: 62.5%;
	color: #000000;
	background-image: url(../images/smstarbg.gif);
/* background-color:  #c0c0c0;    #e5edf5;  */

	}