text: function ElementStyle(element) {
  	this.element = element;
  	this.props = {};
  }
  
  ElementStyle.prototype.setProperty = function(name, value) {
  	if (value === '' || value === null || value === undefined) {
  		delete this.props[name];
  	} else {
  		this.props[name] = value;
  	}
  			
  	this.element.updateStyle(name);
  };
  
  ElementStyle.prototype.removeProperty = function(name) {
  	delete this.props[name];
  	this.element.updateStyle(name);
  };
  
  ElementStyle.prototype.getPropertyValue = function(name) {
  	return this.props[name];
  };
  