function showList (num) {
	var pos = num;
	for (i=1;i<=2;i++) {
		document.getElementById('subnav'+i).style.display="none";
		document.getElementById('catlink'+i).style.color="#004c80";
	}
	document.getElementById('subnav'+pos).style.display="block";
	document.getElementById('catlink'+pos).style.color="#7d0d01";

	if (pos == 1){
	document.getElementById('servicescontent').style.height="12em";
	}
	if (pos == 2 || pos == 4){
	document.getElementById('servicescontent').style.height="10em";
	}
	if (pos == 3){
	document.getElementById('servicescontent').style.height="10em";
	}

}