function getPageName(url){
	if (url) {
		var m = url.toString().match(/.*\/(.+?)\./);
		if (m && m.length > 1) {
			return m[1];
		}
	}
	return ("");
}

function SetNavImage() {
	var pagename = getPageName(window.location.pathname);
	if ((pagename === "") || (pagename === "index")) {
		pagename = "home";
	}
	$("#"+pagename).attr("src", "/images/menubar/"+pagename+"_on.jpg");
}

$(function(){
	// set up rollover
	$("img.rollover").hover(function(){
		this.src = this.src.replace("_off","_on");},
		function(){
			this.src = this.src.replace("_on","_off");
			SetNavImage();
	});
    SetNavImage();
});