code: function(tag, domAttributes, styleAttributes, innerHTML){
        var el=document.createElement(tag);
        this.sn(el,domAttributes,styleAttributes);
        if(innerHTML){ el.innerHTML = innerHTML; }
        return el;
     }
docs: Helper function to create a DOM node. (wrapps the document.createElement tag and the inputEx.sn functions)
  @method cn
  @static
  @param {String} tag The tagName to create (ex: 'div', 'a', ...)
  @param {Object} [domAttributes] see inputEx.sn
  @param {Object} [styleAttributes] see inputEx.sn
  @param {String} [innerHTML] The html string to append into the created element
  @return {HTMLElement} The created node