// check which page is loaded
var bHomePage; bHomePage = location.href.indexOf('index.html')!=-1;
var bBiographyPage; bBiographyPage = location.href.indexOf('biography')!=-1;
var bGroupsPage; bGroupsPage = location.href.indexOf('groups')!=-1;
var bDiscographyPage; bDiscographyPage = location.href.indexOf('discography')!=-1;
var bListenPage; bListenPage = location.href.indexOf('listen')!=-1;

// preload nav images
var home_out = new Image(); home_out.src = "images/nav_home_out.gif";
var home_over = new Image(); home_over.src = "images/nav_home_over.gif";
var biography_out = new Image(); biography_out.src = "images/nav_biography_out.gif";
var biography_over = new Image(); biography_over.src = "images/nav_biography_over.gif";
var groups_out = new Image(); groups_out.src = "images/nav_groups_out.gif";
var groups_over = new Image(); groups_over.src = "images/nav_groups_over.gif";
var discography_out = new Image(); discography_out.src = "images/nav_discography_out.gif";
var discography_over = new Image(); discography_over.src = "images/nav_discography_over.gif";
var listen_out = new Image(); listen_out.src = "images/nav_listen_out.gif";
var listen_over = new Image(); listen_over.src = "images/nav_listen_over.gif";

// page must have a javascript check for people who have javascript turned off!
function buildMenuItem(sName)
{
	var bCurrentPage = (eval("b" + sName + "Page"));
	var sCurrentState= bCurrentPage ? "over" : "out";

	var sOnMouseOver = "onMouseover=\"swapImages('" + sName.toLowerCase() + "','over')\"";
	var sOnMouseOut  = "onMouseout=\"swapImages('" + sName.toLowerCase() + "','out')\"";
	var sLink		 = sName == "Home" ? "index.html" : sName.toLowerCase() + ".html" ;
	var sHref		 = "<a href=\""+ sLink +"\" "+ sOnMouseOver + " " + sOnMouseOut + ">";
	var sMenuImage	 = "<img name=\"" + sName.toLowerCase() + "\" src=\"images/nav_" + sName.toLowerCase() + "_" + sCurrentState + ".gif\" width=\"200\" height=\"20\" border=\"0\">";
	
	var sMenuItem		 =  bCurrentPage ?  sMenuImage : sHref + sMenuImage + "</a>";

	document.write(sMenuItem);
}

function swapImages(name,state)
{
	if (document.images)
	{
		document.images[name].src = eval(name + "_" + state +".src");
	}
}

function openSong(sSongName)
{
	// Set properties for the window created

	var sSrc	= "mp3_player.html?" + escape(sSongName);
	//alert (sSrc);
	var windowX = 0;
	var windowY = 0;
	var width 	= 250;
	var height 	= 100;
	var sFeatures	= "status=1,location=0,resizable=0,scrollbars=0";
	
	openWindowCentered(sSrc,"MP3_player",windowX,windowY,width,height,sFeatures);
}