function showTopicBox(crt) {
	crt.style.display="none";
	elem = document.getElementById("topic-box");
	elem.style.display="block";
}

function showCommentBox(crt) {
	crt.style.display="none";
	elem = document.getElementById("comment-box");
	elem.style.display="block";
}

function changeCursor(crt){
	crt.style.cursor="pointer";
}

function resetCursor(crt){
	crt.style.cursor="default";
}

function valid()
{
	var s="";
	if (document.getElementById("IDTip").value=="0")
	{
		s += "* Selectati un instrument \n";
	}
	if (document.getElementById("IDTipObs").value=="0")
	{
		s += "* Selectati un tip de observare \n";
	}
	if (document.getElementById("IDModOrg").value=="0")
	{
		s += "* Selectati un mod de observare \n";
	}
	if (document.getElementById("IDTipRaport").value=="0")
	{
		s += "* Selectati un tip raport \n";
	}
	if (document.getElementById("IDObs").value=="0")
	{
		s += "* Selectati un fel de observatie \n";
	}

	if (document.getElementById("DataInceperii").value=="")
	{
		s += "* Campul DataInceperii trebuie completat \n";
	}
	if (document.getElementById("DataTerminarii").value=="")
	{
		s += "* Campul DataTerminarii trebuie completat \n";
	}
	if (s!="")
	{
		alert(s);
		return false;
	}
	else
	{
		return validateDate();
	}
	return true;
}

/**
 * DHTML date validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */
// Declaring valid date character, minimum year and maximum year
var dtCh= "/";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}

function isDate(dtStr, msg){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var pos3=dtStr.indexOf(" ",pos2+1)
	if (pos3 == -1)
	{
		pos3 = dtStr.length;
	}
	var strYear=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strDay=dtStr.substring(pos2+1,pos3)

	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	month=parseInt(strMonth)
	day=parseInt(strDay)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("* " + msg +": Formatul trebuie sa fie : aaaa/ll/zz")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("* " + msg +": Introduceti o luna valida")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("* " + msg +": Introduceti o zi valida")
		return false
	}
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("* " + msg +": Introduceti un an de 4 cifre intre "+minYear+" si "+maxYear)
		return false
	}
//	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
//		alert("* " + msg +": Introduceti o data valida")
//		return false
//	}
return true
}

function isGreater(start, end)
{
//	start date
	var start1 = start.indexOf("/")
	var start2 = start.indexOf("/", start1+1)
	var start3 = start.indexOf(" ", start2+1)
	if (start3 == -1)
	{
		start3 = start.length;
	}
	var startYear = start.substring(0, start1)
	var startMonth = start.substring(start1+1, start2)
	var startDay = start.substring(start2+1, start3)
//end date
	var end1 = end.indexOf("/")
	var end2 = end.indexOf("/", end1+1)
	var end3 = end.indexOf(" ", end2+1)
	if (end3 == -1)
	{
		end3 = end.length;
	}
	var endYear = end.substring(0, end1)
	var endMonth = end.substring(end1+1, end2)
	var endDay = end.substring(end2+1, end3)

	var s = "";
	if (endYear < startYear)
	{
		s += "* Anul terminarii este mai mic decat anul inceperii observatiei\n";
	}
	if (endMonth < startMonth)
	{
		s += "* Luna terminarii este mai mica decat luna inceperii observatiei\n";
	}
	if (endDay < startDay && endMonth <= startMonth && endYear <= startYear)
	{
		s += "* Ziua terminarii este mai mica decat ziua inceperii observatiei\n";
	}
	if (s != "")
	{
		alert (s);
		return false;
	}
	return true;
}

function validateDate(){
	var s="";
	var dt1=document.getElementById("DataInceperii").value;
	if (isDate(dt1,"DataInceperii")==false){
		return false;
	}
	var dt2=document.getElementById("DataTerminarii").value;
	if (isDate(dt2,"DataTerminarii")==false){
		return false;
	}
	//compare the dates
	return isGreater(dt1,dt2);
}

function validAdaugComentariu()
{
	if (document.getElementById("text").value == "")
	{
		alert("* Va rugam introduceti un text");
		return false;
	}
	return true;
}

function validAdaugImagine()
{
	var s = "";
	if (document.getElementById("text").value == "")
	{
		s += "* Va rugam introduceti o descriere\n";
	}
	if (document.getElementById("file").value == "")
	{
		s += "* Va rugam adaugati un fisier\n";
	}

	if (s != "")
	{
		alert (s);
		return false;
	}
	return true;
}

function validAdaugMesajPrivat()
{
	if (document.getElementById("text").value == "")
	{
		alert("* Va rugam introduceti un text");
		return false;
	}
	return true;
}

function changeBG(elem,color)
{
	elem.bgColor = color;
}