anchor.diff:  
       _tape.lastkey_present = function(){
           var taperecorder_lastkey = localStorage.taperecorder_lastkey || "";
  -        if(typeof taperecorder_lastkey == typeof undefined || taperecorder_lastkey == null || taperecorder_lastkey == "" || taperecorder_lastkey == "undefined" || taperecorder_lastkey == "null"){
  +        if(_tape.is_blank(taperecorder_lastkey)){
               return false;
           }
           return true;
  
positive.code:         _tape.event_lock = true;
  
          //Sanitize
          _step = _step.replace(/(\r\n|\n|\r)/gm,"").trim();
          _value = _value.replace(/(\r\n|\n|\r)/gm,"").trim();
  
          var taperecorder_scenario = localStorage.taperecorder_scenario || "";
          var taperecorder_lastkey = localStorage.taperecorder_lastkey || "";
  
negative.code:     };
  
      //Utilities
      _tape.is_blank = function(txt){
          txt = _tape.trim(txt)
          if(typeof txt == typeof undefined || txt == null || txt == "" || txt == "undefined" || txt == "null"){
              return true;
          }
          return false;
      };
      _tape.trim = function(str){
          return str.replace(/(\r\n|\n|\r)/gm,"").trim();
      };
      _tape.getTextOrId = function(element) {
          var txt = element.textContent || element.innerText;
          txt = _tape.trim(txt);
          if(_tape.is_blank(txt)){
              txt = element.id || element.getAttribute('name');
          }
          return txt;
      };
      _tape.getLabelTextOrId = function(element) {
         var idVal = element.id;
         labels = document.getElementsByTagName('label');
         for( var i = 0; i < labels.length; i++ ) {
            if (labels[i].htmlFor == idVal)
                 return labels[i].textContent || labels[i].innerText;
         }
         return element.id || element.getAttribute('name');
      };
      _tape.hasClass = function(element, cls) {
          return (' ' + element.className + ' ').indexOf(' ' + cls + ' ') > -1;
      };
  
      _tape.setCookie = function(cname, cvalue, exdays) {
          var d = new Date();
  