var objVisibleLayer;

function showLayer(layerID){
	if( objVisibleLayer ){
		if( objVisibleLayer.id == layerID ) return 0;
	}

	objVisibleLayer = document.getElementById(layerID);

	if( objVisibleLayer )
		objVisibleLayer.style.display = '';

}

function hideLayer(){

	if( objVisibleLayer ){
		objVisibleLayer.style.display = 'none';
		objVisibleLayer = null;
	}

}

function swapSideImage(imgName, imgPath){
	var imgRef = document.getElementById(imgName);

	if( imgRef ){

		imgRef.src = imgPath;

	}

}

function ShowPopUpWindow(Name, File, w, h, Status, Resize, Scroll){
	var t=0, l = 0, winstring = "";

	if(infowindow){
		if(!infowindow.closed) infowindow.close()
	}

	l = ((screen.width / 2) - (w / 2))
	t = ((screen.height / 2) - (h / 2))

	winstring = "width=" + w + ", height=" + h + ",left=" + l + ",top=" + t +  ",status=" + Status + ",resizable=" + Resize + ",scrollbars=" + Scroll;

	infowindow = window.open(basehref + File,Name,winstring);
}

function showElement(eName)
{
	var e = document.getElementById(eName);
	e.style.visibility = 'visible';
	e.style.display = '';
}

function hideElement(eName)
{
	var e = document.getElementById(eName);
	e.style.visibility = 'hidden';
	e.style.display = 'none';
}

function getRadioButtonValue(radioButtonArray) {
	var value = '';
	
	if (!radioButtonArray.length) {
		// Only one radio button, so form.radiobuttonname returns a radiobutton element, not an array
		if (radioButtonArray.checked) {
			value = radioButtonArray.value;
		}
	}
	else {
		for (var i=0; i<radioButtonArray.length; i++) {
			if (radioButtonArray[i].checked) {
				value = radioButtonArray[i].value;
				break;
			}
		}
	}
	
	return value;
}

function GetElementPos(obj) {
	var curleft = curtop = 0;
	if (obj.offsetParent) {
		curleft = obj.offsetLeft
		curtop = obj.offsetTop
		while (obj = obj.offsetParent) {
			curleft += obj.offsetLeft
			curtop += obj.offsetTop
		}
	}
	return [curleft,curtop];
}

function trim(str)
{
   return str.replace(/^\s*|\s*$/g,"");
}

function SetValue(id, newValue) {
	identity=document.getElementById(id);
	identity.value=newValue;
}

function SetInnerHtml(id, newValue) {
	identity=document.getElementById(id);
	identity.innerHTML=newValue;
}

function SetStyle(id, newClass) {
	identity=document.getElementById(id);
	identity.className=newClass;
}

function isEmail(email) {
	var invalidCharString = " ,<>!\"?%^&*()+=*/\\\';:#~[]{}";
	var i = 0;
	
	for (i = 0; i < invalidCharString.length; i++) {
		if (-1 < email.indexOf(invalidCharString.charAt(i))) {
			return false;
		}
	}
	
	var firstAt = email.indexOf('@');
	var lastAt = email.lastIndexOf('@');
	var lastDot = email.lastIndexOf('.');
	if (!((0 < firstAt) && (1 < lastDot) && (firstAt == lastAt) && ((firstAt + 1) < lastDot) && (lastDot < (email.length - 2)))) 
	{
		return false;
	}
	else {
		return true;
	}
}

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 dtCh= "/";
var minYear=1900;
var maxYear=2100;
	var daysInMonth = DaysArray(12);
	var pos1=dtStr.indexOf(dtCh);
	var pos2=dtStr.indexOf(dtCh,pos1+1);
	var strDay=dtStr.substring(0,pos1);
	var strMonth=dtStr.substring(pos1+1,pos2);
	var strYear=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 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 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 SetVisibility(id, visible) {
	var identity=document.getElementById(id);
	if (visible) {
		identity.className = "visibleElement";
	}
	else {
		identity.className = "hiddenElement";
	}
}

function getInputArrayValue(inputArray) {
	var value = '';
	
	if (!inputArray.length) {
		// Only one radio button, so form.radiobuttonname returns a radiobutton element, not an array
		if (inputArray.checked) {
			value = inputArray.value;
		}
	}
	else {
		for (var i=0; i<inputArray.length; i++) {
			if (inputArray[i].checked) {
				value = inputArray[i].value;
				break;
			}
		}
	}
	
	return value;
}

function InsertTextAtCursor(inputElement,textToInsert) {
	inputElement.focus();
	
	if (inputElement.selectionStart) {
		var curPos = inputElement.selectionStart;
		inputElement.value = inputElement.value.substr(0,inputElement.selectionStart) + textToInsert + inputElement.value.substr(inputElement.selectionEnd,inputElement.value.length);
		inputElement.selectionStart = curPos + textToInsert.length;
		inputElement.selectionEnd = inputElement.selectionStart;
	}
	else if (document.selection) {
		var sel = document.selection.createRange();
		sel.text = textToInsert;
	}
	else {
		inputElement.value += textToInsert;
	}
}

function NoneLink() {}

function ReturnKeyCheck(source, e) {
	var characterCode; // literal character code will be stored in this variable
	
	if (e && e.which){ //if which property of event object is supported (NN4)
		characterCode = e.which; //character code is contained in NN4's which property
	}
	else{
		characterCode = e.keyCode; //character code is contained in IE's keyCode property
	}
	
	return (characterCode == 13);
}

function NewWindowLink(a) {
	if (!window.focus) 
	{
		return true;
	}
	window.open(a.href,"_blank");
	return false;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}