var sPath = window.location.pathname;

var sPage = sPath.substring(sPath.lastIndexOf('/'));

//alert(sPage);


var tabs = document.getElementsByTagName("li");   

//alert(tabs.length)

for (var i = 0; i < tabs.length; i++) {   
var href = tabs[i].firstChild.getAttribute("href");
try{
href=href.substring(href.lastIndexOf('/'));
}catch (err){}

if(href===sPage){
tabs[i].id="current";

break;
}

}