docs: function( element, attrName, styleName ) {
  			styleName = styleName || attrName;
  
  			if ( !( styleName in element.styles ) ) {
  				var value = element.attributes[ attrName ];
  
  				if ( value ) {
  					if ( ( /^\d+$/ ).test( value ) )
  						value += 'px';
  
  					element.styles[ styleName ] = value;
  				}
  			}
  
  			delete element.attributes[ attrName ];
  		}