function disc(document)
{
	if (document.getElementById('file').style.visibility == 'hidden')
	{
		document.getElementById('file').style.visibility = 'visible';
		document.getElementById('file1').style.visibility = 'visible';
		document.getElementById('source').style.visibility = 'visible';
		document.getElementById('source1').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('file').style.visibility == 'visible')
	{
		document.getElementById('file').style.visibility = 'hidden';
		document.getElementById('file1').style.visibility = 'hidden';
		document.getElementById('source').style.visibility = 'hidden';
		document.getElementById('source1').style.visibility = 'hidden';
	}

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

function disc_avatar(document)
{
	if (document.getElementById('file').style.visibility == 'hidden')
	{
		document.getElementById('file').style.visibility = 'visible';
		document.getElementById('file1').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('file').style.visibility == 'visible')
	{
		document.getElementById('file').style.visibility = 'hidden';
		document.getElementById('file1').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+")";
	}
}

(function() {
var s = document.createElement('SCRIPT'), s1 = document.getElementsByTagName('SCRIPT')[0];
s.type = 'text/javascript';
s.src = 'http://widgets.digg.com/buttons.js';
s1.parentNode.insertBefore(s, s1);
})()