var aniPlane, aniClouds;
var vPlaneDirection = "DOWN";
function fPlaneAnimation(pEnterScreen) {
    if (pEnterScreen == false) {
        document.getElementById("planePitts").style.left = "750px";
    }
    else {
        if (parseInt(document.getElementById("planePitts").style.left) < 750) {
            document.getElementById("planePitts").style.left = (parseInt(document.getElementById("planePitts").style.left) + 7) + "px";
            aniPlane = setTimeout("fPlaneAnimation()", 20);
        }
        else {
            clearTimeout(aniPlane);
        }
    }    
}

function fCloudAnimation()
{
    if ((parseInt(document.getElementById("bannerClouds1").style.left) - 10) <= -3200)
    { document.getElementById("bannerClouds1").style.left = "3200px" }
    if ((parseInt(document.getElementById("bannerClouds2").style.left) - 10) <= -3200)
    { document.getElementById("bannerClouds2").style.left = "3200px" }
    
    aniClouds = setTimeout("fCloudAnimation()", 50);
    document.getElementById("bannerClouds1").style.left = (parseInt(document.getElementById("bannerClouds1").style.left) - 2) + "px";
    document.getElementById("bannerClouds2").style.left = (parseInt(document.getElementById("bannerClouds2").style.left) - 2) + "px";

    if (vPlaneDirection == "DOWN") {
        document.getElementById("planePitts").style.top = (parseInt(document.getElementById("planePitts").style.top) + 1) + "px";
        if(parseInt(document.getElementById("planePitts").style.top) >= 70){vPlaneDirection = "UP";}
    }
    else {
        document.getElementById("planePitts").style.top = (parseInt(document.getElementById("planePitts").style.top) - 1) + "px";
        if(parseInt(document.getElementById("planePitts").style.top) <= 40){vPlaneDirection = "DOWN";}
    }
}