function messageBox(w,h,message)
{
var messageBox = document.getElementById('messageBox');
x = (screen.availWidth/2) - (w/2);
y = screen.availHeight/2-h/2 - 220;
messageBox.style.left = x;
messageBox.style.top = y;
messageBox.style.width = w + "px";
messageBox.style.height = h + "px";
if (document.all)
{
messageBoxFrame = document.frames[0].document;
} else {
messageBoxFrame = document.getElementById('messageBox').contentDocument;
}
messageBoxFrame.open();
messageBoxFrame.write('Message Box');
messageBoxFrame.write('');
messageBoxFrame.write('');
messageBoxFrame.write('');
messageBoxFrame.write('');
messageBoxFrame.close();
messageBox.style.display = '';
}