// JavaScript Document
function poziceYidObsah(object) {
	var pozice = object.offsetHeight ;
	return pozice;
}
var ypoziceObsah = poziceYidObsah(document.getElementById("obalZahlavy")) + 30;
var vyskaStranky = document.getElementById("mainContainer").offsetHeight ;

//alert(vyskaStranky+'   '+ypoziceObsah);

function JSFX_FloatTopLeft()
{
	var startX = 5, startY = 0;
	var ns = (navigator.appName.indexOf("Netscape") != -1);
	var d = document;
	var px = document.layers ? "" : "px";
	function ml(id)
	{
		var el=d.getElementById?d.getElementById(id):d.all?d.all[id]:d.layers[id];
		if(d.layers)el.style=el;
		el.sP=function(x,y){this.style.left=x+px;this.style.top=y+px;};
		el.x = startX; 
		el.y = startY;
		return el;
	}
	window.stayTopLeft=function()
	{
		
		
		var pY = ns ? pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;
		//PUVODNI    var dY = (pY > startY) ? pY : startY;
		//alert(document.getElementById("obsah").style.top+'ccfc');
		var dY = (pY > ypoziceObsah) ? pY-ypoziceObsah : startY;
		ftlObj.y += (dY - ftlObj.y)/8;
		
		//ftlObj.y = dY;
			
		//alert(vyskaStranky-600+'   '+ftlObj.y)
		if(ftlObj.y < ((vyskaStranky-ypoziceObsah)-600)){
			ftlObj.sP(ftlObj.x, ftlObj.y);
		}
		//setTimeout("stayTopLeft()", 20);
	}
	ftlObj = ml("levyBanner");
	stayTopLeft();
}
JSFX_FloatTopLeft();