function __Tools__(){
  var Document = document;
  this.getElement = function(parent, name, create) {
    for(var i=0; i< parent.childNodes.length; i++)  {
      var element = parent.childNodes.item(i);
      if(element.nodeName == name) {
        return element;      
      }
    }

    if(create) {
      var element = Document.createElement(name);
      parent.appendChild(element);
      return element;
    }
    return null;
  }

  this.getHTML = function() {
    return this.getElement(Document, 'HTML');    
  }
  
  this.getHEAD = function() {
    var Html = this.getHTML(Document);
    return this.getElement(Html, 'HEAD', true);                
  }
  this.include = function(name) {
    var Head = this.getHEAD();
    var script = Document.createElement('script');
    script.src = name;
    Head.appendChild(script);    
  }   
}

var Tools = new __Tools__();