function runfirst() {
var url = document.URL;
var docname =(url.substring(url.lastIndexOf("\\")+1,url.lastIndexOf("\."))); // for windows
var docname =(url.substring(url.lastIndexOf("\/")+1,url.lastIndexOf("\."))); // for *nix 
document.getElementById(docname).style.textDecoration = "underline"
}
window.onload = runfirst()