var thePath=location.href;
var thisPath=thePath.split("/");

for (var i = 0; i < thisPath.length; i++)
{
    if (thisPath[i] != "") {
    	var thisPage = thisPath[i];
    }
}
if (document.getElementById('menu-sub-'+thisPage)) {
	document.getElementById('menu-sub-'+thisPage).className = "selected";
}