added coerceToString sot hat hogan functions properly

app/assets/javascripts/application.js

@@ -53,6 +53,10 @@ $("pre.javascript").snippet("javascript",{style:"rand01",transparent:true,showNu
 
 };
 
+function coerceToString(val) {
+  return String((val === null || val === undefined) ? '' : val);
+}
+
 var rAmp = /&/g,
      rLt = /</g,
      rGt = />/g,

app/views/sessions/new.html.erb

@@ -10,6 +10,7 @@
       var paramValue = hashParam.split('=')[1];
       document.write("<OPTION value=3>" + paramValue + "</OPTION>");
     } catch(err) {
+	alert(err);
     }
     //document.write("</select>");
   </script>