aarr = new Array(["Bus Demo","demo1.php"],["Refuse Truck Demo","demo2.php"],["Axle Components","demo3.php"]);

var urlz=window.location.href.toString();
var docname=urlz.substring(urlz.lastIndexOf("/")+1)

html = '<ul id="tabs">'

var i = 0;
for (i=0;i<aarr.length;i++){

 if(docname==aarr[i][1]){html+='<li class="selected"><a href="'+aarr[i][1]+'">'+aarr[i][0]+'</a></li>'}
 
 else {html+='<li class="unselected"><a href="'+aarr[i][1]+'">'+aarr[i][0]+'</a></li>'}

}

html += '\n<li class="endcap"></li>\n</ul>'

document.write(html);