.top {  background-image: url(pics/top.gif); background-repeat: no-repeat; background-position: center bottom}
.middle {  background-image: url(pics/middle.gif); background-repeat: repeat-y; background-position: center top}
.bottom {  background-image: url(pics/bottom.gif); background-repeat: no-repeat; background-position: center top}
.small {
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	font-size: 9px;
}

.medium {
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	font-size: 12px;
}

.big {
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	font-size: 14px;
	font-weight: bold;
}

.xbig {
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	font-size: 24px;
}

.abstract {  
	font-family: Verdana, Geneva, Arial, Helvetica, sans-serif;
	text-align: justify;
	color:gray;
}

.toplink A:link {text-decoration: none; color:orange}
.toplink A:visited {text-decoration: none; color:orange}
.toplink A:active {text-decoration: none; color:orange}
.toplink A:hover {text-decoration: underline; color: orange;}