var y1 = 0;   // change the # on the left to adjuct the Y co-ordinate
(document.getElementById) ? dom = true : dom = false;

function hideIt() {
  if (dom) {document.getElementById("layer1").style.display='none';}
}

function showIt() {
  if (dom) {document.getElementById("layer1").style.display='';}
}

function placeIt() {
	if (dom && !document.all) {
		//document.getElementById("layer1").style.top = window.pageYOffset + (window.innerHeight - (window.innerHeight-y1)) + "px";
		document.getElementById("layer1").style.top = '100px';
		//document.getElementById("layer1").style.marginTop = "-" + parseInt(document.getElementById("layer1").offsetHeight / 2) + "px";
		//alert(document.getElementById("layer1").style.top);
		document.getElementById("layer1").style.marginLeft = "-" + parseInt(document.getElementById("layer1").offsetWidth / 2) + "px";			
	}
	if (document.all) {
		//document.all["layer1"].style.top = document.documentElement.scrollTop + (document.documentElement.clientHeight - (document.documentElement.clientHeight-y1)) + "px";
		document.getElementById("layer1").style.top = '100px';	
		//document.getElementById("layer1").style.marginTop = "-" + parseInt(document.getElementById("layer1").offsetHeight / 2) + "px";
		document.getElementById("layer1").style.marginLeft = "-" + parseInt(document.getElementById("layer1").offsetWidth / 2) + "px";	
		
		//alert(document.getElementById("layer1").style.marginTop );	
		//alert(document.documentElement.scrollLeft + (document.documentElement.clientWidth- (document.documentElement.clientWidth-y1)) + "px");
	}	
	document.getElementById("layer1").style.zIndex = 100;
	//window.setTimeout("placeIt()", 9000); 
}