// JavaScript Document

	function hPosition()
	{
		var browser=navigator.appName;
		var b_version=navigator.appVersion;
		var version;
		var topMargin;
		
		if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ //test for MSIE x.x;
 		var ieversion=new Number(RegExp.$1) // capture x.x portion and store as a number
  		}
		
		
		if( browser != "Microsoft Internet Explorer" ) 
		{ 
			
			topMargin = (window.innerHeight>document.getElementById('main').clientHeight) ? (window.innerHeight - document.getElementById('main').clientHeight)/2 : 0;
			
		}
		else 
		{ 
			topMargin = (document.documentElement.clientHeight > document.getElementById('main').clientHeight) ? (document.documentElement.clientHeight - document.getElementById('main').clientHeight)/2 : 0;
			
			if(ieversion < 8)
			{
				document.getElementById('bg').style.marginLeft = - (document.documentElement.clientWidth - document.getElementById('main').clientWidth)/2 + "px";
				//document.documentElement.style.overflow = "hidden";
				document.getElementById('main').style.top = topMargin+"px";
			}
			else{ document.getElementById('bg').style.marginLeft = 0+"px" }
		}
		
		
		
		document.getElementById('main').style.marginTop = topMargin+"px";
		
		
		if( browser == "Netscape" )
		{
			document.getElementById('bg').style.marginTop = -topMargin+"px";

			
		}
		
		if(document.documentElement.clientHeight<document.getElementById('main').clientHeight) {
			
			document.body.style.overflow = "visible";
			
		}
		
	}
	
	function onOver(k)
	{
		document.getElementById('btn'+k).src = "gfx/btn_"+k+"a.jpg";
	}
	
	function onOut(k)
	{
		document.getElementById('btn'+k).src = "gfx/btn_"+k+".jpg";
	}
	
	
	
	// Pokazywanie i ukrywanie listy dodatkowej...
	
	
	//listDiv = document.getElementById('lista');
	function showList()
	{
		document.getElementById('lista').style.visibility = "visible";
	}
	
	function hideList()
	{
		document.getElementById('lista').style.visibility = "hidden";
	}