function ShowHide(elementName,imgName) {
	if (document.getElementById(elementName).style.display == "none")
	{
		document.getElementById(elementName).style.display = "block";
		document.getElementById(imgName).src="images/buttons/minus.png";
	} else {
		document.getElementById(elementName).style.display = "none";
		document.getElementById(imgName).src="images/buttons/plus.png";
	}
}

function ChangeHide(elementOne,elementTwo) {
	if (document.getElementById(elementOne).style.display == "none")
	{
		document.getElementById(elementOne).style.display = "block";
		document.getElementById(elementTwo).style.display = "none";
	} else {
		document.getElementById(elementOne).style.display = "none";
		document.getElementById(elementTwo).style.display = "block";
	}
}

function getSpan(insObject) {
        var span;
        var b;
        var proslo = false;
        insObject = insObject.nextSibling;
        if (insObject.nodeName.toLowerCase() != 'div') insObject = insObject.nextSibling;
        if (insObject.nodeName.toLowerCase() != 'div') alert ("Chyba ve strance");
        for (var ci=0; ci<insObject.childNodes.length; ci++) {
                if (insObject.childNodes[ci].nodeName.toLowerCase() == 'b') {
                        b = insObject.childNodes[ci];
                        for (var cy=0; cy<b.childNodes.length; cy++) {
                                if (b.childNodes[cy].nodeName.toLowerCase() == 'span') {
                                        span = b.childNodes[cy];
                                        proslo = true;
                                }
                        }
                }
                if (insObject.childNodes[ci].nodeName.toLowerCase() == 'span') {
                        span = insObject.childNodes[ci];
                        proslo = true;
                }
        }
        if (proslo) {
                return span.innerHTML;
        } else {
                return "neznamy";
        }
}