//window.onresize = resize2;
//window.onload = resize2; 

function resize2() 
{
	var header = returnObjById('headertd');
	if (!header)
		return;

	if (document.body.clientWidth < 850)
	{
		header.style.backgroundImage = "url(http://www.zstynec.cz/obrazky/title800.jpg)"; 
		header.style.backgroundRepeat = "no-repeat";
		header.style.backgroundPosition = "center left";
		
	}
	else
	{
		header.style.backgroundImage = "url(http://www.zstynec.cz/obrazky/title.jpg)"; 
		header.style.backgroundRepeat = "no-repeat";
		header.style.backgroundPosition = "center left";
	}
}

function resize() 
{
	var titleImg = returnObjById('title');
	if (titleImg)
	{
		var logoWidth = 170;
		var titleWidth = 651;
	
		if (document.body.clientWidth - logoWidth < titleWidth )
		{
			var newsize = (document.body.clientWidth - logoWidth) * 0.85;
			if (newsize < titleWidth)
			{
				titleImg.width = newsize;
			}
			else
			{
				titleImg.width = titleWidth;
			}
		}
		else
		{
			titleImg.width = titleWidth;
		}
	}
}

function returnObjById( id )
{
	var returnVar = 'undefined';
	if (document.getElementById)
		returnVar = document.getElementById(id);
	else if (document.all)
		returnVar = document.all[id];
	else if (document.layers)
		returnVar = document.layers[id];
return returnVar;
}

function print(str)
{
	wnd = window.open(str, "_blank", "width=800,height=600,scrollbars=yes,resizable=yes,left=0,top=0")
	return false;
}