function UploadFile()
{
	$('file-input').value = Form.Element.getValue('soubor');
}

function clearField(element, defaulVal)
{
	if(element.value == defaulVal) {
		element.value = '';
	}
}

function createBookmarkLink(title, url) 
{
	if (window.sidebar) { // Mozilla Firefox Bookmark
		window.sidebar.addPanel(title, url, "");
		return false;
	} 
	else if( window.external ) { // IE Favorite
		window.external.AddFavorite( url, title);
		return false;
	}
	else if(window.opera && window.print) { // Opera Hotlist
		return true; 
	}
}

function changeTab(elementId) 
{
	var tabs = $$('#nejctenejsi .article-list');

	for(var i = 0; i < tabs.length; i++) {

		tabs[i].hide();
	}
	
	$(elementId).show();
	
	return false;
}

function changeTabBlog(elementId) 
{
	var tabs = $$('#blogy span');
	
	for(var i = 0; i < tabs.length; i++) {

		tabs[i].hide();
	}
	
	$(elementId).show();
	
	return false;
}