body { background-color: #fff; text-align: center; margin: 8px 0; padding: 0px; }

* { font-family:Arial; font-size:13px; }

h1 { font-size: 16px; }

img { border-width: 0px; }

#container { width: 670px; margin: auto; text-align: left; }

a div.imgbtn1 { background-image: url(../images/nav_btn1-home.gif); }
a div.imgbtn2 { background-image: url(../images/nav_btn2-about.gif); }
a div.imgbtn3 { background-image: url(../images/nav_btn3-scheme.gif); }
a div.imgbtn4 { background-image: url(../images/nav_btn4-resource.gif); }
a div.imgbtn5 { background-image: url(../images/nav_btn5-link.gif); }

#header_navigation { margin-left: 1px; }
#header_navigation a { display: inline; }
#header_navigation a div {  width: 133px; height: 35px; float: left; background-position: 0 0; background-repeat: no-repeat; }
#header_navigation a:hover div { background-position: 0 35px; background-repeat: repeat-y; }

#navigation { width: 185px; float: left; }
#navigation img { margin-bottom: 15px; }

#main div { display: inline; }

#content { width: 470px; float: right; margin-top: 10px; margin-bottom: 15px; }

#header { height: 280px; }

#footer { clear: both; width: 666; height: 55px; background-image: url(../images/footer_bkgrnd.gif); background-repeat: no-repeat; text-align: center; padding-top: 20px; }