--- a/lib/js/urweb.js	Thu May 28 13:47:05 2009 -0400
+++ b/lib/js/urweb.js	Sat May 30 09:59:10 2009 -0400
@@ -237,7 +237,6 @@
   x.innerHTML = html;
   addNode(x);
   runScripts(x);
-  alert("HTML:\n" + html);
 }  
 
 var thisScript = null;
@@ -351,8 +350,9 @@
 function ts(x) { return x.toString() }
 function bs(b) { return (b ? "True" : "False") }
 
-function sub(x, i) { return x[i]; }
-function suf(x, i) { return x.substring(i); }
+function sub(s, i) { return s[i]; }
+function suf(s, i) { return s.substring(i); }
+function slen(s) { return s.length; }
 
 function pi(s) {
   var r = parseInt(s);