// JScript File

var element;
var theImages;
var theStart=0;
var theNextAnchor;
var upOpacity = 0;
var downOpacity = 100;
var fadeInc = 20;
var fadeTimer;
var nextHeroTimer;

function showThisHero(theAnchor){
    window.clearTimeout(nextHeroTimer);
    var theContainer=theAnchor.parentNode.parentNode.parentNode;
    var theAnchors=theAnchor.parentNode.getElementsByTagName('a');
    theImages=theContainer.getElementsByTagName('img');
    var theTitles=theContainer.getElementsByTagName('h4');
    var theTexts=theContainer.getElementsByTagName('p');
    var theLearnMores=theAnchor.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('a');
    if (theAnchor.className.indexOf('on')==-1 && fadeTimer==null){
        for (x=0; x<theAnchors.length; x++){
            if (theAnchor != theAnchors[x]){
                theAnchors[x].className=theAnchors[x].className.replace(/on/, "");
                theTitles[x].style.display="none";
                theTexts[x].style.display="none";
                theLearnMores[x].style.display="none";
                
            } else {
                theAnchors[x].className=theAnchors[x].className+"on";
                theTitles[x].style.display="block";
                theTexts[x].style.display="block";
                theLearnMores[x].style.display="block";
                element=theImages[x];
                if (x==theAnchors.length-1){
                    theNextAnchor=theAnchors[0];
                } else {
                    theNextAnchor=theAnchors[x+1];
                }
            }
        }
        fadeImages();
    }
}

function fadeImages(){
    if (fadeTimer) {
        window.clearTimeout(fadeTimer);
    }
    if (nextHeroTimer) {
        window.clearTimeout(fadeTimer);
    }
    if (upOpacity <= 100){
        for (x=0; x<theImages.length; x++){
            if (theImages[x]==element){
                    element.style.display="block";
                if (navigator.appName.indexOf("Microsoft")!= -1 && parseInt(navigator.appVersion)>=4) {
                    element.filters.alpha.opacity=upOpacity;
                } else {
                    element.style.opacity=upOpacity/100;
                }
            } else if (theImages[x].src!=""){
                if (navigator.appName.indexOf("Microsoft")!= -1 && parseInt(navigator.appVersion)>=4 && theImages[x].filters.alpha.opacity!=0) {
                    theImages[x].filters.alpha.opacity=downOpacity;
                } else if (theImages[x].style.opacity!=0){
                    theImages[x].style.opacity=downOpacity/100;
                }
                if (downOpacity==0){
                        theImages[x].style.display="none";
                }
            }
        }
        upOpacity=upOpacity + fadeInc;
        downOpacity=downOpacity - fadeInc;
        fadeTimer=window.setTimeout("fadeImages()", 100);
    } else {
        upOpacity = 0;
        downOpacity = 100;
        window.clearTimeout(fadeTimer);
        fadeTimer=null;
        nextHeroTimer=window.setTimeout("showNextHero()", 8000);
    }
}

function clearPage(){
    window.clearTimeout(fadeTimer);
    window.clearTimeout(nextHeroTimer);
}

function showNextHero(){
    showThisHero(theNextAnchor)
}

function initHero(){
    theNextAnchor=document.getElementById('heroContainer').getElementsByTagName('a')[1];
    nextHeroTimer=window.setTimeout("showNextHero()", 8000);
}

window.unload=clearPage;
window.onload=initHero;