url = "http://ausits.dot.state.tx.us/snapshots/aus-cam";// link to the cam feed
delay = 1000;// one second refresh rate

_global.tourNo = 2;
_global.tour = new Array();
tour[0] = "tour!";
tour[1] = "US 183 Tour - between McNeil Road and Loop 1 (MoPac)";
tour[2] = "Loop 1 Tour - between Loop 360 North and Lake Austin Boulevard";
tour[3] = "Loop 1 Tour - between Town Lake and Barton Creek";
tour[4] = "US 290 Tour - between Banister to Congress";
tour[5] = "US 183 Tour - between Loop 1 (MoPac) and IH 35";
tour[6] = "IH 35 Tour - between 51st Street and Braker Lane";
tour[7] = "IH 35 near 6th Street";

//-----------------------------------
//
// this handles simple JPEG-based webcams
//
// set 'url' to URL of JPEG image feed
// set 'delay' to frame rate in ms (best to avoid faster than 1s)
// create library item with linkage "proxy" to hold image
//
// Note that the site hosting the cam must allow Flash access
// from arbitrary domains, typically by using a "crossdomain.xml" file
//
// This movie also counts on the images being exactly 320x240 - you may bee to get fancier
// if they're not.
//
//-----------------------------------
//
// The strategy here is to have three "proxy" movie clips that
// each load and rotate to front.  If you have just one clip, then
// it will go blank during the load.  Having three also allows
// some latency in the response for the image load.
//
createEmptyMovieClip("image0",0);// create some initial empty images
createEmptyMovieClip("image1",1);
createEmptyMovieClip("image2",2);

index = 0;
//
// onEnterFrame-based loading
//
// We aren't using setInterval/clearInterval to avoid
// potential memory/timer leaks in the Flash player
//
then = 0;// long, long ago....
this.onEnterFrame = function() {
    now = (new Date()).getTime();// get current time in ms from the epoch
    if (now-then>delay) {// enough time elapsed since last image loaded?
        doLoadImage();// yup, load image
        then = now;// and reset the last load time
    }
};

//
// rotate the images, load the next one
//
function doLoadImage() {
    var name0 = 'image'+(index%3);
    var name1 = 'image'+((index+1)%3);
    var name2 = 'image'+((index+2)%3);
    var m0 = eval(name0);
    var m1 = eval(name1);
    var m2 = eval(name2);
    _level0.infoField._visible = true;
    _level0.infoField.text = _global.tourNo+" "+_global.tour[_global.tourNo];
    m0.swapDepths(0);// rotate the clips
    m1.swapDepths(1);
    m2.removeMovieClip();// throw away the oldest one
    createEmptyMovieClip(name2,2);// make a new one
    m2 = eval(name2);
    m2.loadMovie(url+"0"+_global.tourNo+".jpg"+"?"+Math.random());// load image into it
    index = (index+1)%3;
}