function jump(form)
{
  window.location=form.dropdown.options[form.dropdown.selectedIndex].value
}

var iversion = -1;

function version()
{
	if (iversion != -1) return iversion;

	if (navigator.appName.indexOf("Netscape") != -1)
	{
		if (navigator.userAgent.indexOf("Mozilla/2.0") != -1) iversion = 2;
		else if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) iversion = 3;
		else if (navigator.userAgent.indexOf("Mozilla/4.0") != -1) iversion = 4;
		else iversion = 1;
	}
	else
	{  // Not netscape.
		if(navigator.appName.indexOf("Internet Explorer") != -1)
		{
			if (navigator.userAgent.indexOf("Mozilla/4.0") != -1) iversion = 4; 
			else iversion = 1;
		}
		else iversion = 1;
	}
	return iversion;
}

if (version() >= 3)
{
	home_on = new Image();
	home_on.src = "images/home_on.jpg";
	home_off = new Image();
	home_off.src = "images/home_off.jpg";

	books_on = new Image();
	books_on.src = "images/books_on.jpg";
	books_off = new Image();
	books_off.src = "images/books_off.jpg";

	design_on = new Image();
	design_on.src = "images/design_on.gif";
	design_off = new Image();
	design_off.src = "images/design_off.gif";

	travels_on = new Image();
	travels_on.src = "images/travels_on.jpg";
	travels_off = new Image();
	travels_off.src = "images/travels_off.jpg";

	lectures_on = new Image();
	lectures_on.src = "images/lectures_on.jpg";
	lectures_off = new Image();
	lectures_off.src = "images/lectures_off.jpg";

	bio_on = new Image();
	bio_on.src = "images/bio_on.jpg";
	bio_off = new Image();
	bio_off.src = "images/bio_off.jpg";

	contact_on = new Image();
	contact_on.src = "images/contact_on.jpg";
	contact_off = new Image();
	contact_off.src = "images/contact_off.jpg";
}

function rollon(imgName)
{
	if (3 <= iversion)
	{
		imgOn = eval(imgName + "_on.src");
		document[imgName].src = imgOn;
	}
}

function rolloff(imgName)
{
	if (3 <= iversion)
	{
		document[imgName].src = eval(imgName + "_off.src");
	}
}

var help_window = null;
var counter = 0;

function PopUpWindow(status, url, iw, ih)
{
	if(!window.window2) // not been defined... so we gotta open it.
	{
		window2 = (window.open(url,"messageWindow1","width="+iw+",height="+ih+",resizable=yes,scrollbars=yes,toolbar=yes,status=no")) ;
	} 
	else // Ok. it has been defined..
	{
		if(!window2.closed)
		{
			// Still open, so change url and refocus.
			window2.close() ;
			window2 = (window.open(url,"messageWindow1","width="+iw+",height="+ih+",resizable=yes,scrollbars=yes,toolbar=yes,status=no")) ;
		}
		else
		{
			// It's been closed, so we need to re-open
			window2 = (window.open(url,"messageWindow1","width="+iw+",height="+ih+",resizable=yes,scrollbars=yes,toolbar=yes,status=no")) ;
		}
	}
}