Help with next prev buttons

1

i have a movie clip thats populated with paragraphs of text i was hoping to get a little help with the conditional logic that would apply, i had it working but with errors so i took it apart and started from scratch
basically i wanted the next and previous buttons to tween the movie clip the length of 2 paragraphs at a time, stopping at the front and the back heres what i got

if (ztotal>2) {
if(currentpage <=ztotal &&total !=0 ){
var sectin = b_sections.attachMovie(“secbut”, “secbut”, 555);
sectin._x = 1019;
sectin._y = 49;
sectin._alpha = 0;
sectin.tween("_alpha", 100, 1, “linear”, 0);
sectin.onRollOver = onDragOver=function () {
this.colorTo(0xFF7300, 1);
};
sectin.onRollOut = onDragOut=function () {
this.colorTo(null, 1);
};
sectin.onRelease = function() {

        prevpage = Number(b_sections.pgno.pageno.text)-1;
        newpage = Number(b_sections.pgno.pageno.text)+1
        trace(sectin._x)
        b_sections.pgno.pageno.text = Number(newpage);
        this.tween("_y", 22, 1, "easeOutBounce", 0);
        b_sections.s_holder.tween("_x",  b_sections.s_holder._x-835, 1, "easeOutExpo", 0);
        var sectin2 = b_sections.attachMovie("secbut2", "secbut2", 556);
        
        sectin2._x = 1019
        sectin2._y = 72;
        sectin2._alpha = 0;
        sectin2.tween("_alpha", 100, 1, "linear", .5);
        sectin2.onRelease = function() {
            b_sections.pgno.pageno.text = prevpage;
            this.tween("_alpha", 0, 1, "linear", 0);
            sectin.tween("_y", 49, 1, "easeOutBounce", 0);
            b_sections.s_holder.tween("_x", b_sections.s_holder._x+835, 1, "easeOutExpo", 0, function () {
                sectin2.removeMovieClip();
            });
        };
        }
    };
}