i have customized Horizontal List (items are image and some text) of a reel with some no of clips . i have customized highlight , un highlight and select style , which will be implemented dynamically and mouse over and out. now pproblem is to make un highlight previously playing clip.

enter code here
styleName="unhighlightedClip" updateComplete="currentlyPlaying();" rollOver="highlighted();" rollOut="unhighlighted();"> .currentlyPlayingClip{ borderColor: #95123E; borderStyle: solid; borderThickness: 2; }

                    .unhighlightedClip{
                        borderStyle: none;
                    }
                    .highlightedClip{
                        borderColor: #70BAE7;
                        borderStyle: solid;
                        borderThickness: 2;
                    }
                 </mx:Style>
                 <mx:Script>
                  <![CDATA[
                    import mx.controls.Alert;
                    import mx.controls.HorizontalList;

                    private var prevIndex:int = -1;
                   protected function unhighlighted():void{
                    var selected:Boolean = HorizontalList(this.owner).isItemSelected(this.data);
                    clipDesription.useHandCursor = false;
                    clipStartTime.useHandCursor = false;
                    this.useHandCursor = false;
                    if(!selected)  
                        this.setStyle('styleName', 'unhighlightedClip');
                   }
                   protected function highlighted():void{
                    clipDesription.useHandCursor = true;
                    clipStartTime.useHandCursor = true;
                    this.useHandCursor = true;
                    var selected:Boolean = HorizontalList(this.owner).isItemSelected(this.data);
                    if(!selected) 
                        this.setStyle('styleName', 'highlightedClip');
                   }
                   protected function currentlyPlaying():void{ 
                    var selected:Boolean = HorizontalList(this.owner).isItemSelected(this.data);
                    var currentIndex:int = HorizontalList(this.owner).selectedIndex;

                    if(selected)
                        this.setStyle('styleName', 'currentlyPlayingClip');

// else if(prevIndex != currentIndex ) // this.setStyle('styleName', 'unhighlightedClip'); //
// prevIndex = currentIndex;
} ]]>