gotoAndPlay(nextFrame); Trouble

I have created two buttons. I want one to play the next frame and one to play the previous frame. I am using the code from the complex button rollover. I have tried several different things but cant seem to get it to work.

I tried to change this

this.onRelease = function(){
getURL(“solutions.php#fax_routing”,"_self");

to this

this.onRelease = function(){
_root.gotoAndPlay(nextFrame);

and this

this.onRelease = function(){
gotoAndPlay(nextFrame);

Any help would be great, thanks!!


stop(); // stop the movie clip from playing (stop button from growing, we want that when the mouse rolls over only
                                             
this.onEnterFrame = function(){
    if(rewind == true){   //if rewind switch is set to true play backwards
        prevFrame();        // play backwards
    }
}

this.onRollOver = function(){
    rewind = false; //set variable (or switch) that decides wether ot not to play backwards...
    play();    // play this movie clip.. (grow the button(tween));
}

this.onRollOut = function(){
    rewind = true;    //set or rewind switch to true so it will play backwards...
}

this.onRelease = function(){
    getURL("solutions.php#fax_routing","_self");
}