function osobisty(document)
{
	if (document.getElementById('plik').style.visibility == 'hidden')
	{
		document.getElementById('plik').style.visibility = 'visible';
		document.getElementById('plik1').style.visibility = 'visible';
		document.getElementById('zrodlo').style.visibility = 'visible';
		document.getElementById('zrodlo1').style.visibility = 'visible';

	}
	
	if (document.getElementById('link').style.visibility == 'visible')
	{
		document.getElementById('link').style.visibility = 'hidden';
		document.getElementById('link1').style.visibility = 'hidden';
	}
}

function internet(document)
{
	if (document.getElementById('plik').style.visibility == 'visible')
	{
		document.getElementById('plik').style.visibility = 'hidden';
		document.getElementById('plik1').style.visibility = 'hidden';
		document.getElementById('zrodlo').style.visibility = 'hidden';
		document.getElementById('zrodlo1').style.visibility = 'hidden';
	}

	if (document.getElementById('link').style.visibility == 'hidden')
	{
		document.getElementById('link').style.visibility = 'visible';
		document.getElementById('link1').style.visibility = 'visible';
	}
	
}

function osobisty_avatar(document)
{
	if (document.getElementById('plik').style.visibility == 'hidden')
	{
		document.getElementById('plik').style.visibility = 'visible';
		document.getElementById('plik1').style.visibility = 'visible';
	}
	
	if (document.getElementById('link').style.visibility == 'visible')
	{
		document.getElementById('link').style.visibility = 'hidden';
		document.getElementById('link1').style.visibility = 'hidden';
	}
}

function internet_avatar(document)
{
	if (document.getElementById('plik').style.visibility == 'visible')
	{
		document.getElementById('plik').style.visibility = 'hidden';
		document.getElementById('plik1').style.visibility = 'hidden';
	}

	if (document.getElementById('link').style.visibility == 'hidden')
	{
		document.getElementById('link').style.visibility = 'visible';
		document.getElementById('link1').style.visibility = 'visible';
	}
	
}

function changeBgImage (image, id) {
	var element = document.getElementById(id);
	element.style.backgroundImage = "url("+image+")";
}

function changeBgImageSelected (image, id, strona) {
	var element = document.getElementById(id);
	
	if(id==strona)
	{}
	else
	{
		element.style.backgroundImage = "url("+image+")";
	}
}