//slide_number is the total number of slides on the stage.
//This is the one you change if you add or delete slides

slide_number = 5;

//this controls how fast the reel scrolls

reel_speed = 3;

//slide_count?always starts at 3, because
//?Slide?s 1 and 2 are already in place from the
//?following lines

slide_count = 3;
m1 = _root.slide_1;
m2 = _root.slide_2;
m1._x = 0;
m1._y = 0;
m2._x = 200;
m2._y = 0;

//You will notice above movie 2 starts at 200.
// This is because our clips are 200 wide.
//this calls the function below it every frame

this.onEnterFrame = function() {
        _root.moveLeft(reel_speed);
};

//Ok, this function moves the movies left until
//they move 200 pixels, then loads the next slide in line.
// There always has to be two clips moving side
//by side so that when we mask this it will
//look continuous.

function moveLeft(nPixels) {
        m1._x -= nPixels;
        m2._x -= nPixels;
        
        //Ok, these if statements basically say
        //?I?m done with that slide, give me the next
        //one in line and I?ll put it next to the one that is
        //still scrolling.
        //Once the number of slides is reached
        //the IF returns the count to the beginning.
        //and slide_1 starts again
        
        if (m1._x<-200) {
                m1 = _root["slide_" + slide_count];
                slide_count = slide_count += 1;
                if (slide_count > slide_number) {
                        slide_count = 1;
                }
                
                //Ok, this is a grey area. There seems to be some
                //kind of latency between the time the movie is told
                //to load(onEnterFrame) and when it appears on screen. If anyone
                //can explain this to me that would be great.
                //If you speed the reel up, or scale the slides up,
                //you need to play with this. What I?m doing is putting the
                //next slide in 6 pixels shorter on the _x because the delay
                //shows gaps in the reel. You could put a background behind
                //the reel and not worry about the little gaps. This seems
                //to fix the problem though.
                
                m1._x = 194;
                m1._y = 0;
        }
        
        //Same as above, only with the alternative slide
        
        if (m2._x<-200) {
                m2 = _root["slide_" + slide_count];
                slide_count = slide_count += 1;
                if (slide_count > slide_number) {
                        slide_count = 1;
                }
                m2._x = 194;
                m2._y = 0;
        }
}