function showElement(id) {

divname = document.getElementById(id);
divname.style.visibility = 'visible';
};

function hideElement(id) {

divname = document.getElementById(id);
divname.style.visibility = 'hidden';
};

function adjustMenu() {

var winWidth = document.body.clientWidth; 
var winAdj = (winWidth - 770) / 2; if (winAdj < 0) { winAdj = 0 };

hideElement("aboutMenu"); hideElement("hostingMenu"); hideElement("supportMenu"); hideElement("servicesMenu"); hideElement("whyMenu");

document.getElementById("aboutMenu").style.left = winAdj + 39;
document.getElementById("hostingMenu").style.left = winAdj + 120;
document.getElementById("supportMenu").style.left = winAdj + 195;
document.getElementById("servicesMenu").style.left = winAdj + 272;
document.getElementById("whyMenu").style.left = winAdj + 349;

};

function containsDOM (container, containee) {
var isParent = false;
do {
if ((isParent = container == containee))
break;
containee = containee.parentNode;
}
while (containee != null);
return isParent;
};

function checkMouseEnter (element, evt) {
if (element.contains && evt.fromElement) {
return !element.contains(evt.fromElement);
}
else if (evt.relatedTarget) {
return !containsDOM(element, evt.relatedTarget);
}};

function checkMouseLeave (element, evt) {
if (element.contains && evt.toElement) {
return !element.contains(evt.toElement);
}
else if (evt.relatedTarget) {
return !containsDOM(element, evt.relatedTarget);
}};

function popup(image) {

  window.open('/includes/popup.php?image=' + image,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=500,height=300,screenX=150,screenY=150,top=100,left=350')

}

function tutorial(movie) {

  window.open('/includes/tutorial.php?movie=' + movie,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=790,height=450,screenX=150,screenY=150,top=100,left=150')

}