// javascript for elements page

// detect browser and specify style sheet
if (navigator.appName=='Microsoft Internet Explorer')
		document.write('<'+'link rel="stylesheet" href="css/mainIE.css" />');
	else if (navigator.vendor=='Apple Computer, Inc.' )
		document.write('<'+'link rel="stylesheet" href="css/mainSAF.css" />');
	else if (navigator.appName=='Opera' && (navigator.platform)=='MacPPC')
		document.write('<'+'link rel="stylesheet" href="css/mainOP.css" />');
	else if (navigator.appName=='Opera' && (navigator.platform)=='Win32')
		document.write('<'+'link rel="stylesheet" href="css/mainOPWIN.css" />');
	else if (navigator.appCodeName=='Mozilla' && (navigator.platform)=='Win32')
		document.write('<'+'link rel="stylesheet" href="css/mainFFWIN.css" />');
	else if (navigator.vendor=='Camino')
		document.write('<'+'link rel="stylesheet" href="css/main.css" />');
	else 
		document.write('<'+'link rel="stylesheet" href="css/main.css" />');
		
		
// image swap for thumbnail nav text
if (document.images) {
		truss06 = new Image(12, 150);
		truss06.src = "media/trussTXT.jpg";
		vertebrae = new Image(12, 150);
		vertebrae.src = "media/vertTXT.jpg";
		bblock = new Image(12, 150);
		bblock.src = "media/bblkTXT.jpg";
		martini = new Image(12, 150);
		martini.src = "media/mbarsTXT.jpg";
		spider = new Image(12, 150);
		spider.src = "media/spiderTXT.jpg";
		timber = new Image(12, 150);
		timber.src = "media/timberTXT.jpg";
		gocab = new Image(12, 150);
		gocab.src = "media/goTXT.jpg";
		ironH = new Image(12, 150);
		ironH.src = "media/ironTXT.jpg";
		boom = new Image(12, 150);
		boom.src = "media/boomTXT.jpg";
		fire = new Image(12, 150);
		fire.src = "media/fireTXT.jpg";
		holder0 = new Image(12, 150);
		holder0.src = "media/transparent.gif";
		holder = new Image(12, 150);
		holder.src = "media/transparent.gif";
		holder2 = new Image(12, 150);
		holder2.src = "media/transparent.gif";
		holder3 = new Image(12, 150);
		holder3.src = "media/transparent.gif";
		holder4 = new Image(12, 150);
		holder4.src = "media/transparent.gif";
		holder5 = new Image(12, 150);
		holder5.src = "media/transparent.gif";
		holder6 = new Image(12, 150);
		holder6.src = "media/transparent.gif";
		holder7 = new Image(12, 150);
		holder7.src = "media/transparent.gif";
		holder8 = new Image(12, 150);
		holder8.src = "media/transparent.gif";
		holder9 = new Image(12, 150);
		holder9.src = "media/transparent.gif";
	}	
	
	
	function chgImg(imgField, newImg) {
		if (document.images) {
			document[imgField].src = 
			eval(newImg + ".src")
		}
	}