//Functions shared by PNG & Nashville HTML pages

function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}

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_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];}
}

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) { //v3.0
  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); return x;
}

function tmt_findObj(n){ //used for NN6 compatible showHideLayers()
	var x,t; if((n.indexOf("?"))>0&&parent.frames.length){t=n.split("?");
	x=eval("parent.frames['"+t[1]+"'].document.getElementById('"+t[0]+"')");
	}else{x=document.getElementById(n)}return x;
}

function MM_showHideLayers() { //v3.0A Modified by Al Sparber and Massimo Foti for NN6 Compatibility
  var i,p,v,obj,args=MM_showHideLayers.arguments;if(document.getElementById){
   for (i=0; i<(args.length-2); i+=3){ obj=tmt_findObj(args[i]);v=args[i+2];
   v=(v=='show')?'visible':(v='hide')?'hidden':v;
   if(obj)obj.style.visibility=v;}} else{
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
    obj.visibility=v; }}
}

function MM_openBrWindow(theURL,winName,features) { //v2.0 Modified to use timeout for IE4 error when immediately focusing
	myWindow = window.open(theURL,winName,features);
	//setTimeout("myWindow.focus()",250); //prevents error in IE4 focusing before window is created
}

//used for image swap on reload on homePage
function getHomePageImage() {
  var picNum = (Math.floor(Math.random()*3));
  var picName = pics[picNum];
  document.homeImage.src = picName;
}

//used on home page for NN4 resize bug w/ flash, draws flash or gif
function getFlash() {
  var theVersion = parseInt(navigator.appVersion);
  if ((navigator.appName == "Netscape") && (theVersion < 5 )) {
    theSource = '<img src="/images/home.gif" width="156" height="85" vspace="0" hspace="0" border="0">';
    document.write(theSource);
     }
  else {
    theSource = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0" width="156" height="85"><param name=movie value="/images/home.swf"><param name="QUALITY" value="high"><embed src="/images/home.swf" pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="156" height="85" quality=high></embed></object>';
    document.write(theSource);
    }
}

//check for empty field in search box
function checkSearch( form ) {
  if (form.SearchField.value=="" || form.SearchField.value==" " ) {
	alert("Please enter a value to search for.");
  } else {
	form.SearchField.value=form.SearchField.value.toLowerCase();
	form.submit();
  }
}

function FixCookieDate(date){
  var base = new Date(0);
  var skew = base.getTime();  //dawn of Unix time - should be 0
  if (skew > 0) 
  {
       date.setTime(date.getTime() - skew)
  }
}

function getCookieVal (offset) {  
	var endstr = document.cookie.indexOf (";", offset);  
	if (endstr == -1) {
		endstr = document.cookie.length;
	}  
	return unescape(document.cookie.substring(offset, endstr));
}


function GetCookie (name) {  
	var arg = name + "=";  
	var alen = arg.length;  
	var clen = document.cookie.length;  
	var i = 0;  
	
	while (i < clen) {    
		var j = i + alen;    
		if (document.cookie.substring(i, j) == arg) {
			return getCookieVal (j);
		}
		
		i = document.cookie.indexOf(" ", i) + 1;    
		if (i == 0) {
			break;   
		}
	}  	
	return null;
}


//set cookie values
function SetCookie (name, value) {  
	var argv = SetCookie.arguments;  
	var argc = SetCookie.arguments.length;  
	var expires = (argc > 2) ? argv[2] : null;  
	var path = (argc > 3) ? argv[3] : null;  
	var domain = (argc > 4) ? argv[4] : null;  
	var secure = (argc > 5) ? argv[5] : false;  
	
	document.cookie = name + "=" + escape (value) + 
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
((path == null) ? "" : ("; path=" + path)) +  
((domain == null) ? "" : ("; domain=" + domain)) +    
((secure == true) ? "" : "");
}

function DeleteCookie (name) { 
	path = "/";
	document.cookie = name + "=" + ";path=" + path + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

var popupBPWin
function genericPopup(page)
{
   var scwidth, scheight, popwidth, popheight, popleft, poptop;
   var popFeatures, popURL, popupURLTA;
   //Set the default window positions for default screen of 800 by 600
   scwidth = 0;
   scheight = 0;
   popheight = 500;
   popwidth=700;
   popleft = 65;
   poptop = 25;
  popFeatures = ""
  popURL = "https://bp.piedmontng.com/billpresentment/bp.asp";
  popURLTA = "https://bp.piedmontng.com/tradeallies/ta.asp";
   //popFeatures = 'width='+popwidth+',height='+popheight+',left='+popleft+',top='+poptop+'toolbar=no,status=yes,location=no,menubar=no,scrollbars=yes,resizable=yes';
                
              	if(!popupBPWin || popupBPWin.closed)
	{  
                        //Check screen resolution and reset popup window if not default 800 by 600
                         if((screen.width > 800) && (screen.height > 600))
                         {
                             popwidth = 640;
                             popheight = 650;
                             popleft = 168;
                             poptop = 25; 
                          }
                          
                            popFeatures = 'width='+popwidth+',height='+popheight+',left='+popleft+',top='+poptop+'toolbar=no,status=yes,location=no,menubar=no,scrollbars=yes,resizable=yes';
                
                          //Used to switch between Company pages
                         switch(page) 
                         {
                           case(1):  //Page 1 is Piedmont
                           break;
                             
                           case(2):  //Nashville Gas 
                             popURL = popURL + "?sid=2"; 
                             break;

                           case(3):  //NCNG Page
                             popURL = popURL+"?sid=3"
                             break;

                          case(4):  //ECNG Page
                             popURL = popURL+"?sid=4";
                             break;

                          case(5):  //PNG Page
                             popURL = popURLTA+"?sid=1";
                             break;

                          case(6):  //Nashville Page
                             popURL = popURLTA+"?sid=2";
                             break;

                         case(7):  //NCNG Page
                             popURL = popURLTA+"?sid=3";
                             break;

                         case(8):  //ECNG Page
                             popURL = popURLTA+"?sid=4";
                             break;

                          default:
                             break;
                     }
                 
                      popupBPWin=window.open(popURL,"",popFeatures); 
                 
	}else{
	popupBPWin.focus()

	}
              
}

var popupPOLWin
function POLPopup(page)
{
	if(!popupPOLWin || popupPOLWin.closed)
	{popupPOLWin=window.open("https://www.piedmontng.com/apps/gms/default.asp","","width=600,height=450,left=168,top=25,toolbar=yes,status=yes,location=no,menubar=yes,scrollbars=yes,resizable=yes,"); 

	}else{
	popupPOLWin.focus()
	}
}


var popupTradeAlliesWin
function genericTradeAlliesPopup(page)
{
	if(!popupTradeAlliesWin || popupTradeAlliesWin.closed)
	{popuptradeAlliesWin=window.open("https://bp.piedmontng.com/SalesForms/servicerequestform.asp","","width=600,height=650,left=168,top=25 toolbar=yes,status=yes,location=no,menubar=yes,scrollbars=yes,resizable=yes,"); 

	}else{
	popupTradeAlliesWin.focus()
	}
}


var popupSafeHarborWin
function SafeHarborPopup(page)
{
	if(!popupSafeHarborWin || popupSafeHarborWin.closed)
	{popupSafeHarborWin=window.open("http://www.piedmontng.com/investorRelations/safeHarbor","","width=600,height=650,left=168,top=25,toolbar=yes,status=yes,location=no,menubar=yes,scrollbars=yes,resizable=yes,"); 

	}else{
	popupSafeHarborWin.focus()
	}
}

var popupTAWin
function genericTAPopup(page)
{
   var scwidth, scheight, popwidth, popheight, popleft, poptop;
   var popFeatures, popURL;
   //Set the default window positions for default screen of 800 by 600
   scwidth = 0;
   scheight = 0;
   popheight = 500;
   popwidth= 650;
   popleft = 168;
   poptop = 25;
  popFeatures = ""
 
  //Set the default URL for Piedmontng
  popURL = "https://bp.piedmontng.com/TradeAllies/ta.asp";
   //popFeatures = 'width='+popwidth+',height='+popheight+',left='+popleft+',top='+poptop+'toolbar=no,status=yes,location=no,menubar=no,scrollbars=yes,resizable=yes';
                
              	if(!popupTAWin || popupTAWin.closed)
	{  
                        //Check screen resolution and reset popup window if not default 800 by 600
                         if((screen.width > 800) && (screen.height > 600))
                         {
                             popwidth = 640;
                             popheight = 650;
                             popleft = 168;
                             poptop = 25; 
                          }
                          
                            popFeatures = 'width='+popwidth+',height='+popheight+',left='+popleft+',top='+poptop+'toolbar=no,status=yes,location=no,menubar=no,scrollbars=yes,resizable=yes';
                
                          //Used to switch between Company pages
                         switch(page) 
                         {
                           case(1):  //Page 1 is Piedmont
                              break;
                             
                           case(2):  //Nashville Gas 
                             popURL = popURL + "?sid=2"; 
                             break;

                           case(3):  //NCNG Page
                             popURL = popURL+"?sid=3"
                             break;

                          case(4):  //ECNG Page
                             popURL = popURL+"?sid=4";
                             break;

                          default:
                             // No need to fix this. This the default. 
                             break;
                     }
                      popupTAWin=window.open(popURL,"",popFeatures); 
	}else{
	popupTAWin.focus()
	}
              
}

function checkInput(thisform)
 {
      
     thisform.submit();
 }

var CSPopUpWin
var closetime = 0;
function Start(URL, WIDTH, HEIGHT) {
windowprops = "left=200,top=50,toolbar=yes,status=yes,location=no,menubar=yes,scrollbars=yes,resizable=yes,width=" + WIDTH + ",height=" + HEIGHT;
CSPopUpWin = window.open(URL, "preview", windowprops);
 CSPopUpWin.blur();
//if (closetime) setTimeout("CSPopUpWin.close();", closetime*1000);
}


function EmergencyPopUp()
{
      window.open("http://www.piedmontng.com/eprise/main/piedmontng/emergency_popup","","width=525,height=250,left=168,top=100 toolbar=no,status=no,location=no,menubar=no,scrollbars=no,resizable=no,");
      //width = 525;  // width of window in pixels
      //height = 400; // height of window in pixels
       //width=0;  //smallest window Netscape will allow
       //height=0; //smallest window Netscape will allow
      //delay = 0;    // time in seconds before popup opens
}


var timerID;
function CustomerSurveyPopUp()
{
     var expdate = new Date();
     var curdate = expdate;
     var ref
     var sid

      url = "http://www.piedmontng.com/customer_survey/survey.asp";
      width = 525;  // width of window in pixels
      height = 400; // height of window in pixels
       //width=0;  //smallest window Netscape will allow
       //height=0; //smallest window Netscape will allow
      delay = 0;    // time in seconds before popup opens
      if(!GetCookie("survey1"))
      {
        sid = 1   //Set serverid to 1 for Piedmont 
        // alert("Cookie not found ");
         //alert("Window location is " + window.location);
         ref = String(window.location).toLowerCase();
         //Try to determine if we are coming from nashville gas
         if((ref.indexOf("nashvillegas.com") > -1) || (ref.indexOf("ngc") > -1))
             sid = 2;
        // alert("sid = " + sid);
         FixCookieDate(expdate);
         //Set cookie to expire in 6 months
         expdate.setTime(expdate.getTime() + (180 * 24 * 60 * 60 * 1000));  // 6 months
         SetCookie("survey1","Customer Survey",expdate,"/");
        if((typeof(CSPopUpWin) != "object") || (CSPopUpWin.Closed))
         {
             //timerID = "Start(CSPopUpWin=window.open("http://www.piedmontng.com/customer_survey/survey.asp?sid="+sid,"","width=600,height=550,left=168,top=25 toolbar=yes,status=yes,location=no,menubar=yes,scrollbars=yes,resizable=yes,"); 
             url += "?sid="+sid;
             Start(url, width, height);
         }else{
            CSPopUpWin.focus();
        }
     }
 }
function alternate(id){ 
 if(document.getElementsByTagName){  
   //try catch to catch null tables
     var table = document.getElementById(id);
    if(table != null){
       var rows = table.getElementsByTagName("TR");   
     for(i = 0; i < rows.length; i++){           
   //manipulate rows 
     if(i % 2 == 0){ 
       rows[i].className = "even"; 
     }else{ 
       rows[i].className = "odd"; 
     }
   } 
  }      
  } 
  }

function alternateRows(){
el = document.getElementsByTagName("TABLE");
for (i = 0; i < el.length; i++)
{
    if (el.className == "altRows") {
        rows = el.getElementsByTagName("TR");
        for (j = 0; j < rows.length; j++) {
            //manipulate rows 
            if (j % 2 == 0) {
                rows[j].className = "even";
            } else {
                rows[j].className = "odd";
            }
        }
    }
 }
}