function dummy(){
}

function hideLayer(iObjLayerName) {
  if (isMinNS4){    
    document.layers[iObjLayerName].visibility = 'hidden'; 
  }    
  if (isMinIE4){   
    document.all[iObjLayerName].style.visibility = 'hidden'; 
  }
}

function showLayer(iObjLayerName) {	
  if (isMinNS4){
    document.layers[iObjLayerName].visibility = 'visible';
  }
  if (isMinIE4){ 
    document.all[iObjLayerName].style.visibility = 'visible'; 
  }
}

function hideV4Layer(layer) {

  if (isMinNS4)
    layer.visibility = "hide";
  if (isMinIE4)
    layer.style.visibility = "hidden";
}

function showV4Layer(layer) {

  if (isMinNS4)
    layer.visibility = "show";
  if (isMinIE4)
    layer.style.visibility = "visible";
}

function inheritLayer(layer) {
  if (isMinNS4)
    layer.visibility = "inherit";
  if (isMinIE4)
    layer.style.visibility = "inherit";
}

function isVisible(layer) {
  if (isMinNS4 && layer.visibility == "show")
    return(true);
  if (isMinIE4 && layer.style.visibility == "visible")
    return(true);
  return(false);
}


scrollMoveX = 0; scrollMoveY = 0;

function moveLayerAfterScroll(layerIDtoMove){
if (isMinIE4) { DifferenceY = document.body.scrollTop; DifferenceX = document.body.scrollLeft; }
if (isMinNS4) { DifferenceY = self.pageYOffset; DifferenceX = self.pageXOffset; }

	positioneur = (DifferenceY - scrollMoveY);
	if(isMinIE4) document.all[layerIDtoMove].style.pixelTop += positioneur;
	if (isMinNS4) document.layers[layerIDtoMove].top += positioneur;
	scrollMoveY = scrollMoveY + positioneur;

	positioneur = (DifferenceX - scrollMoveX);
	if(isMinIE4) document.all[layerIDtoMove].style.pixelLeft += positioneur;
	if (isMinNS4) document.layers[layerIDtoMove].left += positioneur;
	scrollMoveX = scrollMoveX + positioneur;

}


currentX = currentY = 0;  
lastScrollX = 0; lastScrollY = 0;
	
function smoothLayerMover(layerID){
if(isMinIE4) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }
if(isMinNS4) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
		
if(diffY != lastScrollY){
    percent = .2 * (diffY - lastScrollY);
    if(percent > 0) percent = Math.ceil(percent);
    else percent = Math.floor(percent);
	if(isMinIE4) document.all[layerID].style.pixelTop += percent;
	if(isMinNS4) document.layers[layerID].top += percent; 
    lastScrollY = lastScrollY + percent;
	}
if(diffX != lastScrollX){
	percent = .2 * (diffX - lastScrollX);
	if(percent > 0) percent = Math.ceil(percent);
	else percent = Math.floor(percent);
	if(isMinIE4) document.all[layerID].style.pixelLeft += percent;
	if(isMinNS4) document.layers[layerID].left += percent;
	lastScrollX = lastScrollX + percent;
	}
}