function NaviHighlight(item)
	{
		item.style.filter = 'alpha(opacity=100)';
		item.style.opacity = '1';
	}
	
	function NaviHide(item)
	{
		item.style.filter = 'alpha(opacity=50)';
		item.style.opacity = '.50';
	}
	
	function NaviHighlight2(id)
	{
		var item = document.getElementById(id);
		item.style.filter = 'alpha(opacity=100)';
		item.style.opacity = '1';
	}
	
	function NaviHide2(id)
	{
		var item = document.getElementById(id);
		item.style.filter = 'alpha(opacity=50)';
		item.style.opacity = '.50';
	}
	
	function Swap(item, src)
	{
		item.src = src;
	}
	
	function Fullscreen(path)
	{
		document.getElementById("fullscreen").style.height = getHeight() + 'px';
		document.getElementById('fullscreen').style.display = 'block';
		document.getElementById('fscreen').src = path;
	}
	
	function FullscreenOff()
	{
		document.getElementById('fullscreen').style.display = 'none';
	}
	
	function getHeight()
	{
		var myHeight = 0;
		
		//Non-IE
		if(typeof( window.innerWidth ) == 'number')
		{
	//		myHeight = window.innerHeight;
			myHeight = document.documentElement.scrollHeight;
		}
		//IE 6+ in 'standards compliant mode'
		else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) )
		{
			myHeight = document.documentElement.clientHeight;
		}
		//IE 4 compatible
		else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) )
		{
			myHeight = document.body.scrollHeight;
		}
		//return [myWidth, myHeight];
		return myHeight;
	}
	
	function pausecomp(millis)
	{
	var date = new Date();
	var curDate = null;
	
	do { curDate = new Date(); }
	while(curDate-date < millis);
	} 
	
	function showMenu()
	{	
		sirka_menu = document.getElementById("float_menu").clientWidth;
		sirka_page = document.getElementById("measure").clientWidth;
		sirka_stred = document.getElementById("inner").clientWidth;
		x = Math.round(sirka_page/2 + sirka_stred/2 - 10);
		document.getElementById("float_menu").style.left = x + 'px';
		
	}	
	function hideMenu()
	{
		vyska = document.getElementById("outer").clientHeight;
		vyska_menu = document.getElementById("float_menu").clientHeight;
		x = Math.round(1.8*vyska/5 - vyska_menu/2);
		document.getElementById("float_menu").style.top = x + 'px';
		
		sirka_menu = document.getElementById("float_menu").clientWidth;
		sirka_page = document.getElementById("measure").clientWidth;
		sirka_stred = document.getElementById("inner").clientWidth;
		x = Math.round(sirka_page/2 + sirka_stred/2 - sirka_menu + 15);
		document.getElementById("float_menu").style.left = x + 'px';
	}