// Version
var VERSION="20090629.182357";

// Commonly referenced elements
var elemDateTime;
var elemLegend;
var elemTimer;
var elemDebug;
var elemLoading;
var imgLoading;

// Window
var elemOffset=10;
var bodyHeight;
var topHeight;
var bottomHeight;
var windowWidth;
var windowHeight;
var lastScroll;
var whileScroll;
var procScroll=0;

// Printing
var screenYears=3;
var printYears=5;

// Current cursor stuff
var defCursor='default';
var emHeight=0;

// Timers
var clockTimer;
var scrollTimer;
var startTime;
var loadTimer;
var floatTimer;
var longTime=30;
var longAsk=1;

// Timezone
var curTZ='UTC';
var offsetTZ=0;
getTZ();

// Browser info
var isIE=document.all?true:false;
var isSafari=(navigator.userAgent.indexOf('Safari') > -1);
var isNetscape=(navigator.userAgent.indexOf('Netscape') > -1);
var isFirefox=(navigator.userAgent.indexOf('Firefox') > -1);
var isMac=(navigator.userAgent.indexOf('Mac') > -1);

// Floating window
var floaterVisible=0;
var floaterLoading=0;
var doHideFloater=0;

////////////////////////////////////////////////////////////////////////////////
// Body functions
function bodyLoaded() {
  // Initialize body stuff
  elemDateTime=document.getElementById('menu_datetime');
  elemLegend=document.getElementById('menu_legend');
  elemTimer=document.getElementById('menu_timer');
  elemDebug=document.getElementById('menu_debug');
  elemLoading=document.getElementById('menu_loading');
  imgLoading=new Image();
  imgLoading.src='inc/loading.gif';

  // Figure out how big 1em of text is
  var sizediv=document.createElement("div");
  sizediv.id = 'sizediv';
  sizediv.style.top = '-100px';
  sizediv.style.position = 'fixed';
  sizediv.innerHTML = 'M';
  document.body.appendChild(sizediv);
  emHeight=getHeight(sizediv);
  document.body.removeChild(sizediv);

  // Try to fix scrolling issues
  topHeight=Math.ceil(emHeight*5);
  bottomHeight=Math.ceil(emHeight*6.5);
  bodyHeight=0;
  if (self.innerHeight)
    bodyHeight = self.innerHeight;
  else if (document.documentElement && document.documentElement.clientWidth)
    bodyHeight = document.documentElement.clientHeight;
  else if (document.body)
    bodyHeight = document.body.clientHeight;
  bodyHeight=bodyHeight - topHeight - bottomHeight;
  lastScroll=0;
  whileScroll=lastScroll;

  // Initialize window sizes
  if (window.innerWidth) {
    windowWidth = window.innerWidth;
    windowHeight = window.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientWidth) {
    windowWidth = document.documentElement.clientWidth;
    windowHeight = document.documentElement.clientHeight;
  }
  else if (document.body) {
    windowWidth = document.body.clientWidth;
    windowHeight = document.body.clientHeight;
  }

  // Discourage use of the Back button
  window.onbeforeunload = function () {
    return "The Satellite Inventory uses AJAX to transfer data and does not keep a browser history.  Navigating away from this page will cause you to lose your search state."
  }

  // Initialize others
  clearTimer();
  drawClock();
  initAll();
  showSearch();
  getAllCoverages();
  getAllSchedules();
  getAllKeyedComments();
// # This is done with the <title> tag now
//  getAllBandInfo();
}

// Placeholder for drag stuff that was moved out of the way
var isDrag=false;
function isDraggable() { return(isDrag); }

function fixScroll() {
  if (!procScroll) return;
  clearTimeout(scrollTimer);
  scrollTimer = setTimeout('doFixScroll()',100);
}
function doFixScroll() {
  var thisScroll=getScrollTop();
  var diffScroll=lastScroll - thisScroll;
  lastScroll=thisScroll;
  // Scrolled up
  if (diffScroll>0) {
    if (diffScroll > bodyHeight) {
      toScroll=(thisScroll+(diffScroll-bodyHeight))*-1;
      procScroll=0;
      window.scroll(0,toScroll);
    }
  }
  // Scrolled down
  else if (diffScroll<0) {
    diffScroll=diffScroll * -1;
    if (diffScroll > bodyHeight) {
      toScroll=(thisScroll-(diffScroll-bodyHeight))*-1;
      procScroll=0;
      window.scroll(0,toScroll);
    }
  }
  procScroll=0;
}

function initAll() {
  if (!isDraggable()) hideAll();
  initSearch();
  initPrefs();
  initOrder();
  initHelp();
  if (!isDraggable()) showPrefs();
}

function hideAll() {
  hideSearch();
  hidePrefs();
  hideOrder();
  hideHelp();
}

function toggleAdmin() {
  if (isAdmin()) {
    adminOff();
  }
  else {
    testFile('../admin/ok.html','setAdmin();');
  }
}
function setAdmin(xmlhttpstatus) {
  if (xmlhttpstatus==200) {
    adminOn();
  }
  else {
    adminOff();
  }
}

function drawClock() {
  var now = new Date();
  if (curTZ=='UTC') {
    var UTC = now.toUTCString();
    UTC = UTC.replace(' GMT','');
    UTC = UTC.replace(' UTC','');
    now = new Date(UTC);
  }
  var humanDate = now.format('d')+' '+now.format('M')+' '+now.format('Y');
  humanDate+='.'+pad_zeroes(3,now.format('z')*1+1);
//  var humanTime = now.format('H')+':'+now.format('i')+':'+now.format('s');
  var humanTime = now.format('H')+':'+now.format('i');
  var theDateTime = humanDate + ' @ ' + humanTime;
  elemDateTime.innerHTML=theDateTime+' ('+curTZ+')';
//  clockTimer = setTimeout('drawClock()',1000);
  clockTimer = setTimeout('drawClock()',5000);
}

function pad_zeroes (digits, n) {  // n is a string or number
   if(n.constructor == Number) n = n.toString();
   while(n.length < digits) n = '0' + n;
   return n;
}

function getTZ() {
  if (getCookie('showtz')==2) {
    curTZ='Local';
    var tmpDate = new Date();
    offsetTZ = tmpDate.format('Z');
  }
  else {
    curTZ='UTC';
    offsetTZ=0;
  }
}

function doLoading() {
  defCursor='progress';
  setCursor('progress');
  elemLoading.innerHTML='Loading...';
  startTimer();
}

function doneLoading() {
  defCursor='default';
  unsetCursor();
  elemLoading.innerHTML='';
  stopTimer();
}

function startTimer() {
//  if (loadTimer) { return(false); }
  var d = new Date();
  startTime=d.getTime();
  clearTimeout(loadTimer);
  elemTimer.innerHTML='0.0 sec';
  loadTimer=setTimeout('countTimer()',100);
  longAsk=1;
}

function stopTimer() {
  clearTimeout(loadTimer);
  elemTimer.innerHTML='Done: '+elemTimer.innerHTML;
  isSearching=0;
}

function countTimer() {
  var d = new Date();
  var thisTime=d.getTime();
  theTime=(Math.round((thisTime-startTime)/100))/10;
  checkTimer(theTime);
  if (theTime>=1) { elemTimer.innerHTML=theTime.toFixed(1)+' sec'; }
  else { elemTimer.innerHTML=theTime+' sec'; }
  if (!runningAJAX) stopTimer();
  else loadTimer=setTimeout('countTimer()',100);
}

function checkTimer(theTime) {
  if (theTime<=longTime) return;
  if (longAsk && !isSearching && runningAJAX) {
    var msg='Page update is taking longer than expected.\nStop process?';
    if (confirm(msg)) {
      runningAJAX=0;
      doneLoading();
    }
    else {
      longAsk=0;
    }
  }
}

function clearTimer() {
  elemTimer.innerHTML='';
}

function doDebug(string) {
  elemDebug.innerHTML=string;
}

////////////////////////////////////////////////////////////////////////////////
// Manipulate elements
function hideElem(id) {
  document.getElementById(id).style.visibility = 'hidden';
  document.getElementById(id).style.display = 'none';
}
function showElem(id) {
  document.getElementById(id).style.visibility = 'inherit';
  document.getElementById(id).style.display = 'block';
}
function toggleElem(id) {
  if (document.getElementById(id).style.display=='block' ||
      document.getElementById(id).style.display=='') {
    hideElem(id);
  }
  else { showElem(id); }
}

function getScrollTop(theElem) {
  if (theElem==null) theElem=document.body;
  if (theElem.id.match(/^menu_/) ||
      theElem.id.match(/^search_/) ||
      theElem.id.match(/^prefs_/) ||
      theElem.id.match(/^help_/) ||
      theElem.id.match(/^td_month/) ||
      theElem.id.match(/^IMG_manual/)
     ) {
    if (document.body.offsetTop)
      return getTop(theElem)-document.body.offsetTop;
    else
      return getTop(theElem);
  }
  var fromTop = document.body.scrollTop;
  if (!fromTop) {
    var scroller=document.body.parentNode;
    if (scroller) fromTop=scroller.scrollTop;
  }
  return(getTop(theElem) - fromTop);
}
function getScrollLeft(theElem) {
  if (!theElem.id.match(/^td_month/)) return(getLeft(theElem));
  var scrollElem=document.getElementById('div_calendar');
  return(getLeft(theElem)-scrollElem.scrollLeft);
}

function getHeight(theElem) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  var theVal=0;
  if (theElem.offsetHeight)
    theVal=theElem.offsetHeight;
  else if (document.defaultView && document.defaultView.getComputedStyle)
    if (document.defaultView.getComputedStyle(theElem,'')!=null)
      theVal=document.defaultView.getComputedStyle(theElem,'').height;
  return(stringToInt(theVal));
}
function getWidth(theElem) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  var theVal=0;
  if (theElem.offsetWidth)
    theVal=theElem.offsetWidth;
  else if (document.defaultView && document.defaultView.getComputedStyle)
    if (document.defaultView.getComputedStyle(theElem,'')!=null)
      theVal=document.defaultView.getComputedStyle(theElem,'').width;
  return(stringToInt(theVal));
}
function getTop(theElem) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  var theVal=0;
  while (theElem!=null) {
    if (isSafari && theElem.id=='body') break;
    theVal+=theElem.offsetTop;
    theElem=theElem.offsetParent;
  }
  return(theVal);
}
function getLeft(theElem) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  var theVal=0;
  while (theElem!=null) {
    if (isSafari && theElem.id=='body') break;
    theVal+=theElem.offsetLeft;
    theElem=theElem.offsetParent;
  }
  return(theVal);
}
function getStyle(theElem, property) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  var theVal='';
  if (theElem.currentStyle)
    theVal=theElem.currentStyle(property);
  else if (window.getComputedStyle)
    theVal=document.defaultView.getComputedStyle(theElem,null).getPropertyValue(property);
  return theVal;
}
function stringToInt(string) {
  var stringInt=parseInt(string);
  if (isNaN(stringInt)) { stringInt=0; }
  return(stringInt);
}

function placeElem(theId) {
  var theElem=document.getElementById(theId);
  if (isDraggable()) {
    theElem.style.left=elemOffset+'px';
    theElem.style.top=(getHeight('menu_top')+elemOffset)+'px';
    theElem.style.position='absolute';
    elemOffset+=10;
  }
  else {
    var theLeft=getLeft(document.getElementById('menu_'+theId))-1;
//    var theWidth=getWidth(theElem);
//    if (theWidth<=0)
//      theWidth=900;
//    theElem.style.width=theWidth-theLeft+'px';
    theElem.style.left=theLeft+'px';
    theElem.style.top='1.5em';
    theElem.style.position='fixed';
  }
}

function showFloater(theElem) {
  if (theElem==null) return;
  if (typeof(theElem)=='string') theElem=document.getElementById(theElem);
  floaterLoading=1;

  var html ='<table id=floater_table style="';
      html+='  border:1px solid black; border-collapse:collapse; width:100%;';
      html+='"><tr>';
      html+='<td class=topheader style="width:24px;">';
      html+='<img style="background-color:white;border:1px solid black;';
      html+='  padding:2px;float:left;" src="inc/loading.gif">';
      html+='</td><td class=topheader style="text-align:left;">';
      html+='Loading...';
      html+='</td></tr></table>';
  document.getElementById('floater_body').innerHTML = html;
  var top=getScrollTop(theElem);
  var left=getScrollLeft(theElem);
  var width=getWidth(theElem);
  var height=getHeight(theElem);
  var anchorRight=0;

  // Place the floater on screen
  var floater=document.getElementById('floater');
  var fwidth=getWidth(floater);
  if (left + fwidth > windowWidth) anchorRight=1;
  if (anchorRight) left = left - fwidth + width;
  floater.style.top = top + height + 'px';
  floater.style.left = left + 'px';

  // Adjust the focus box as necessary
  var focus=document.getElementById('floater_focus');
  focus.style.top = -1*height - 1 + 'px';
  focus.style.width = width - 1 + 'px';
  focus.style.height = height - 1 + 'px';
  if (anchorRight) focus.style.left = fwidth - width + 'px';

  showElem('floater');
  floaterVisible=1;
}
function hideFloater() {
  if (!floaterVisible) return;
  doHideFloater++;
  clearTimeout(floatTimer);
  if (floaterLoading)
    floatTimer=setTimeout('hideFloaterNow()',10000);
  else
    floatTimer=setTimeout('hideFloaterNow()',1000);
}
function hideFloaterNow() {
  if (doHideFloater<=0) return;
  doHideFloater=1;
  hideElem('floater');
  floaterVisible=0;
}

////////////////////////////////////////////////////////////////////////////////
// Cookies
function setCookie(name,value) {
  var expDate=new Date('Jan 1, 2012 12:34:56');
  var theVal=name+'='+value+';expires='+expDate.toGMTString();
  document.cookie=theVal;
  return(false);
}

function getCookie(name) {
  var theCookie=document.cookie;
  var theCookies=theCookie.split(';');
  var retVal='';
  for (i=0; i<theCookies.length; i++) {
    var re=new RegExp (' ', 'gi') ;
    theCookies[i]=theCookies[i].replace(re,'');
    theCrumbs=theCookies[i].split('=');
    if (theCrumbs[0]==name) {
      retVal=theCrumbs[1];
      break;
    }
  }
  return(retVal);
}