code: function(el, value)
  	{
  		// TODO Restrict to text input fields?
  		
  		if (el.cbMaxChars)
  		{
  			el.removeEventListener('keypress', el.cbMaxChars);
  		}
  		
  		el.cbMaxChars = function(event)
  		{
  			if ((el.value || el.innerHTML).length >= value)
  			{
  				event.preventDefault();
  			}
  		};
  		
  		el.addEventListener('keypress', el.cbMaxChars);
  	}
docs: Limits the number of characters that can be entered into
  input and other form fields
  
  @param 		{HTMLElement}	el - DOM element to which the attribute applies
  @param 		{string} 		value - The value referenced by the attribute
  @returns		{void}
  
  @example
  <div cb-max-chars="propertyName"></div>