docs: function( elem, name, value, extra ) {
  		// Don't set styles on text and comment nodes
  		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
  			return;
  		}
  
  		// Make sure that we're working with the right name
  		var ret, type, hooks,
  			origName = jQuery.camelCase( name ),
  			style = elem.style;
  
  		name = jQuery.cssProps[ origName ] || ( jQuery.cssProps[ origName ] = vendorPropName( style, origName ) );
  
  		// gets hook for the prefixed version
  		// followed by the unprefixed version
  		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
  
  		// Check if we're setting a value
  		if ( value !== undefined ) {
  			type = typeof value;
  
  			// convert relative number strings (+= or -=) to relative numbers. #7345
  			if ( type === "string" && (ret = rrelNum.exec( value )) ) {
  				value = ( ret[1] + 1 ) * ret[2] + parseFloat( jQuery.css( elem, name ) );
  				// Fixes bug #9237
  				type = "number";
  			}
  
  			// Make sure that NaN and null values aren't set. See: #7116
  			if ( value == null || type === "number" && isNaN( value ) ) {
  				return;
  			}
  
  			// If a number was passed in, add 'px' to the (except for certain CSS properties)
  			if ( type === "number" && !jQuery.cssNumber[ origName ] ) {
  				value += "px";
  			}
  
  			// Fixes #8908, it can be done more correctly by specifying setters in cssHooks,
  			// but it would mean to define eight (for every problematic property) identical functions
  			if ( !jQuery.support.clearCloneStyle && value === "" && name.indexOf("background") === 0 ) {
  				style[ name ] = "inherit";
  			}
  
  			// If a hook was provided, use that value, otherwise just set the specified value
  			if ( !hooks || !("set" in hooks) || (value = hooks.set( elem, value, extra )) !== undefined ) {
  				style[ name ] = value;
  			}
  
  		} else {
  			// If a hook was provided get the non-computed value from there
  			if ( hooks && "get" in hooks && (ret = hooks.get( elem, false, extra )) !== undefined ) {
  				return ret;
  			}
  
  			// Otherwise just get the value from the style object
  			return style[ name ];
  		}
  	}