// JavaScript Document

function checkItem(txF, dvName_) {	
	ret = 1;
	style_ = 'stFormCellText';
	item_ = document.getElementById(dvName_);
	if(txF.value == '') {
		style_ = "stFormCellTextError";		
		ret = 0;
	}
	item_.className = style_;
	return ret;
}

function checkItemL(txF, dvName_) {	
	ret = 1;
	style_ = 'stFormCellTextL';
	item_ = document.getElementById(dvName_);
	if(txF.value == '') {
		style_ = "stFormCellTextErrorL";		
		ret = 0;
	}
	item_.className = style_;
	return ret;
}

function checkItemC(txF, dvName_) {	
	ret = 1;
	style_ = 'stFormCellTextC';
	item_ = document.getElementById(dvName_);
	if(txF.value == '') {
		style_ = "stFormCellTextErrorC";		
		ret = 0;
	}
	item_.className = style_;
	return ret;
}

function setDVstyle(dv, st){
	item_ = document.getElementById(dv);
	item_.className = st;
}


function hideDiv(id) {
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showDiv(id) {		  
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}


function toggle_visibility(id) {
	var e = document.getElementById(id);
	if(e.style.display == 'none')
		e.style.display = 'block';
	else
		e.style.display = 'none';
}


function echeck(str) {
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)

	 if (str.indexOf(at)==-1) return false
	 if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr) return false
 	 if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || ldot+1==lstr) return false
	 if (str.indexOf(at,(lat+1))!=-1) return false
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot) return false
	 if (str.indexOf(dot,(lat+2))==-1) return false		
	 if (str.indexOf(" ")!=-1) return false
	
	return true					
}

function isNumeric(sText) {
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;
   for (i = 0; i < sText.length && IsNumber == true; i++)  { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1)
		return false;
   }
	return true;
}


var dtCh= "-";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    return true;
}

function stripCharsInBag(s, bag){
	var i;
    var 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){
    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){
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
	var strYear=dtStr.substring(0,pos1);
	var strMonth=dtStr.substring(pos1+1,pos2);
	var strDay=dtStr.substring(pos2+1);
	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) return false;
	if (strMonth.length<1 || month<1 || month>12) return false;
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]) return false;
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear) return false;
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false) return false;
return true;
}

function tadd(id){
	document.tab.action="tabel_addvalue.php?id=" + id;
	document.tab.submit();
}