function display(el)
{
	var element = document.getElementById(el);
	var image = document.getElementById("img" + el);
	
	if (element != null)
		element.style.display = element.style.display == "none" ? "inline" : "none";
	if (image != null)
		image.src = image.src.indexOf("sq.gif") >= 0 ? "../image/tr.gif" : "../image/sq.gif";
}

//****************************************************************************

function setFocus(el)
{
	var element = document.getElementById(el);
	if (element != null)
		element.focus();
}

//****************************************************************************

function setVisible(el, visible)
{
	var element = document.getElementById(el);
	if (element != null)
		element.style.display = visible ? "block" : "none";
}

//****************************************************************************

function setHeadVisibility()
{
	var T = document.getElementById("T");
	if (T != null)
		T.style.height = "100%";
	setVisible("head", false);
	setVisible("bottom", false);
}

//****************************************************************************

function refreshOpener()
{
	var op = window.opener;
	if (op != null)
	{
		if (!op.closed)
			op.document.location.replace(op.document.URL);
	}
}
function podsvetka()
{
   // var el = document.
}