function flip_id(elID)
{
	if (document.getElementById(elID))
	{
     var el = document.getElementById(elID).style;
	 if (el.display=='none')  el.display='inline' 
		else el.display='none';
	}
}

function setDivMaxHeight(arr)
{
	var maxHeight = getDivsMaxHeight(arr);
	for (i=0; i<arr.length; i++) {
		if (document.getElementById(arr[i])) document.getElementById(arr[i]).style.height = maxHeight + "px";
	}
}

function getDivsMaxHeight(arr) 
{
	var arrDivHeight = new Array(arr.length);

	for (i=0; i<arr.length; i++) {
		if (document.getElementById(arr[i])) arrDivHeight[i] = document.getElementById(arr[i]).offsetHeight;
	}
	
	var maxDivHeight = arrDivHeight.reverse(arrDivHeight.sort(sortNumber)).slice(0,1);
	return maxDivHeight;
}

function sortNumber(a,b) {
	return a - b;
}

function otworz(url, rozmx, rozmy, scrolls) {
    mywin = window.open(url,'_blank','toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars='+scrolls+',resizable=1,copyhistory=0,width='+rozmx+',height='+rozmy);
    mywin.focus();
}