var preloadArrow = new Image();
preloadArrow.src = "/img/obc_leftnav_arrow_over.gif";
function swapLeftNav(whichNav,overOut) {
	var whichNavNum = false;
	if (whichNav.id) {
		whichNavNumParts = whichNav.id.split("leftNav");
		if (whichNavNumParts.length > 1) whichNavNum = whichNavNumParts[1];
	}
	if (whichNavNum) {
		var whichNavTd,whichNavImg,tdClass,arrowImg;
		whichNavImg = fixElement("leftNavImg" + whichNavNum);
		whichNavImg.src = "/img/obc_leftnav_arrow_" + overOut + ".gif";
		whichNavTd = fixElement("leftNavTd" + whichNavNum);
		whichNavTd.className = "leftLink" + overOut.substring(0,1).toUpperCase() + overOut.substring(1,overOut.length);
	}
}