var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));

try {
	var pageTracker = _gat._getTracker("UA-10700976-1");
	pageTracker._trackPageview();
} catch(err) {}

function highlightNav(which) {
	var nav_item = document.getElementById("nav_" + which);
	var nav_item_classname = nav_item.className;
	
	var nav_dot = document.getElementById("dot_" + which);
	
	if (nav_item_classname == "nav_item") {
		nav_item.className = "nav_item selected";
		nav_dot.src = "images/nav_dot.jpg";
	} else {
		nav_item.className = "nav_item";
		nav_dot.src = "images/white_1px.gif";
	}
}

function showImage(which) {
	var img = document.getElementById("nav_" + which);
	img.src = "images/nav_" + which + "_on.jpg";
}

function hideImage(which) {
	var img = document.getElementById("nav_" + which);
	img.src = "images/nav_" + which + "_off.jpg";
}

function disableNav(which) {
	var a_nav = document.getElementById("a_" + which);
	a_nav.onmouseover = null;
	a_nav.onmouseout = null;
}

function toggleDiv(which) {
	var div = document.getElementById(which);
	var div_state = div.style.visibility;
	
	if (div_state == "visible") {
		div.style.visibility = "hidden";
	} else {
		div.style.visibility = "visible";
	}
}

function setDiv(which, state) {
	var d = document.getElementById(which);
	d.style.visibility = state;
}

function setNav() {
	var url = String(top.location);
	var page = url.substring(url.lastIndexOf('/') + 1);

	switch (page) {
		case "clients.php":
			showImage("clients");
			disableNav("clients");
			break;
		
		case "work.php":
			showImage("work");
			disableNav("work");
			break;
		
		case "work_johnson.php":
			showImage("work");
			disableNav("work");
			break;

		case "companies.php":
			showImage("companies");
			disableNav("companies");
			break;
		
		case "trends.php":
			showImage("trends");
			disableNav("trends");
			break;
		
		case "contact.php":
			showImage("contact");
			disableNav("contact");
			break;
		
	}
}

window.onload = setNav;