var rowClicked = 0;
var lastColorUsed;
var lastRow, lastRowClickedColor;

var hoverColor = '#f0fae7';//'#DFEDF2';
var clickedColor = '#f0fae7'; //'#E9F4F7';

function changeBG(row, highlight) {
	if (highlight) {
		lastColorUsed = row.style.backgroundColor;
		row.style.backgroundColor = hoverColor;
	} else {
		row.style.backgroundColor = rowClicked ? clickedColor: lastColorUsed;
		rowClicked = 0;
	}
}

function clickedRow(row) {
	if (lastRow != row) {
		if (lastRow) {
			lastRow.style.backgroundColor = lastRowClickedColor;
		}
		lastRowClickedColor = lastColorUsed;
		lastRow = row;
		rowClicked = 1;
		row.style.backgroundColor = clickedColor;
	}
}

var countPol = 1;
function addTableRow(id, name) {
		var tbody = document.getElementById(id).getElementsByTagName("TBODY")[0];
		var row = document.createElement("TR");
					
		var td1 = document.createElement("TD");
		td1.innerHTML = + countPol + "&nbsp;&nbsp;<input name=\"" + name + "\" type=\"text\" id=\"" + name + "\" size=\"20\" maxlength=\"20\" />";
		td1.noWrap = true;
		row.appendChild(td1);
		
		tbody.appendChild(row);

		countPol++;
}

 
function open_dot_old(id, user)
{
	window.open ("http://online.vyskumy.sk/online/dot_online_" + id + "/start.php?user=" + user, "_blank" + id,"status=0,scrollbars=1,toolbar=0,location=0,menubar=0,directories=0,height=550,width=900");
}

//http://dotaznik.vyskumy.sk/dot/10003/6824

function open_dot(id, user)
{
	window.open ("http://dotaznik.vyskumy.sk/dot/" + id + "/" + user, "_blank" + id,"status=0,scrollbars=1,toolbar=0,location=0,menubar=0,directories=0,height=550,width=900");
}

function check_agreed()
{
	if (!document.getElementById("agree").checked)
	{
		alert('Aby ste sa mohli zaregistrovať, musíte súhlasiť s týmito podmienkami!');
		return false;
	}
	else
	{
		return true;
	}
}

function redirect_me(path)
{
	window.location = path;
}

//get Explorer version (-1 if not IE)

function vIE()
{
	var result;
	if (navigator.appName=='Microsoft Internet Explorer')
	{
		result = parseFloat((new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})")).exec(navigator.userAgent)[1]);
	}
	else
	{
		result = -1;
	}
	return result;
}

function isInteger (s)
{
	var i;
	if (isEmpty(s))
	if (isInteger.arguments.length == 1) return 0;
	else return (isInteger.arguments[1] == true);
	
	for (i = 0; i < s.length; i++)
	{
		var c = s.charAt(i);
		if (!isDigit(c)) return false;
	}
	
	return true;
}

	 
function isEmpty(s)
{
	return ((s == null) || (s.length == 0))
}

function isDigit (c)
{
	return ((c >= "0") && (c <= "9"))
}

function check_quantity(c)
{
	x = document.getElementById(c).value;
	if (isInteger(x))
	{
		return true;
	}
	else
	{
		alert('Zadaná hodnota nie je povolená!');
		return false;
	}
}