var dom=(document.getElementById)?true:false;
var nn4=(document.layers)?true:false;
var ie4=(!dom && document.all)?true:false;
var To, From, Offset, Offset1,  menuCond, dist, x;
function move() {
if (nn4) {
    From=document['upperpart'].top;
    To=top.pageYOffset+5;
    From1=document['lowerpart'].top;
    To1=top.pageYOffset+5;
  }
else {
    From=document.all['upperpart'].style.posTop; 
    To=document.body.scrollTop+5;
    From1=document.all['lowerpart'].style.posTop; 
    To1=document.body.scrollTop+5;    
  }
if (From!=To) { 
    Offset=Math.ceil(Math.abs(To-From)/20);
    if (To<From) Offset=-Offset;
    if (nn4) document['upperpart'].top+=Offset;
    else document.all['upperpart'].style.posTop+=Offset; 
   }
if (From1!=To1) { 
    Offset1=Math.ceil(Math.abs(To1-From1)/20);
    if (To1<From1) Offset1=-Offset1;
    if (nn4) document['lowerpart'].top+=Offset1;
    else document.all['lowerpart'].style.posTop+=Offset1; 
   }
setTimeout ("move()",10);
}
function change() {
setTimeout("hide('lowerpart');show('upperpart')",10000);
}
function init() {
status();
hide('lowerpart');
menuCond="closed";
}
function openMenu(element) {
if (menuCond=="closed") {
	show(element);
	menuCond="open";
}
else {
   hide(element);
   menuCond="closed";
  }
}
function status() {
self.onError=null;
window.status="";
return true;
parent.document.all.tags("frameset")(0).rows="100%";
}
function show(element) {
if (dom) document.getElementById(element).style.visibility="visible";
else if (ie4) document.all[element].style.visibility="visible";
else if (nn4) document.layers[element].visibility="show";
}
function hide(element) {
if (dom) document.getElementById(element).style.visibility="hidden";
else if (ie4) document.all[element].style.visibility="hidden";
else if (nn4) document.layers[element].visibility="hide";
}
function open(element) {
if (dom) document.getElementById(element).style.display="block";
else if (ie4) document.all[element].style.display="block";
}
function close(element) {
if (dom) document.getElementById(element).style.display="none";
else if (ie4) document.all[element].style.display="none";
}
function intro() {
x=(window.screen.width)/2-200;
if (nn4) document.plane.left=-400;
if (ie4 || dom) {
    document.all['plane'].style.posLeft=-400;
	document.all["s1"].src="sounds/fly211.wav";
    document.all["s1"].loop=0;
  }
show('plane');
movePlane();
}
function movePlane() {
if (ie4 || dom) {
    if (document.all['plane'].style.posLeft<x) {
        document.all['plane'].style.posLeft=document.all['plane'].style.posLeft+13;
        setTimeout("movePlane()",100);
      }
    else document.all["s1"].src="";
  }	
if (nn4) {
    if (document.plane.left<x) {
        document.plane.left=document.plane.left+13;
        setTimeout("movePlane()",100);    
	}
  }
}
function hideCont() {
hide('toDisp');
hide('plane');
hide('lowerpart');
setTimeout("showCont()",10000);
}
function showCont() {
show('toDisp');
show('plane');
}