function checkDuration(entry) {
  var dur = parseInt(entry.value);
  if (dur > 50) {
    alert("Der Suchzeitraum ist zu groß.");
    entry.focus();
    return false;
  }
  return true;
}

function checkDateRange(frm) {
  if (!isDateOptionChecked(frm, "7")) {
    return true;
  }
  var sday = parseInt(frm.sd_D.options[frm.sd_D.selectedIndex].value);
  var smon = frm.sd_M.options[frm.sd_M.selectedIndex].value;
  var syea = parseInt(frm.sd_Y.options[frm.sd_Y.selectedIndex].value);
  var eday = parseInt(frm.ed_D.options[frm.ed_D.selectedIndex].value);
  var emon = frm.ed_M.options[frm.ed_M.selectedIndex].value;
  var eyea = parseInt(frm.ed_Y.options[frm.ed_Y.selectedIndex].value);
  if (!compareDate(sday, smon, syea, eday, emon, eyea, 1)) {
    frm.ed_D.focus();
    alert("Das Beginndatum muß vor dem Enddatum liegen.");
    return false;
  }
  return true;
}
function checkText(entry) {
  var val = entry.value + "";
  val = val.replace(/ */, "");
  if (val.length > 0)  { return true; }
  entry.focus();
  entry.select();
  alert("Dieses Feld darf nicht leer sein.");
  return false;
}

function validDate(day, mon, year)   {
  mon = mon + "";
  year = year + "";
  mon = mon.toUpperCase();
  if ((day < 1)  || (day > 31))  { return 0;  }
  if ((year < 0)  || (year > 9999) || (year == "NaN") || (year == "---")) { return 0;  }
  if ((mon != "0") && (mon != "1") && (mon != "2") && (mon != "3") && (mon != "4") && (mon != "5") && (mon != "6") && (mon != "7") && (mon != "8") && (mon != "9") && (mon != "10") && (mon != "11"))  { return 0; }  if ((mon== "0") || (mon== "2") || (mon== "4") || (mon== "6") || (mon== "7") || (mon== "9") || (mon== "11")) { return 1;
  } else {
    if ((mon== "3") || (mon== "5") ||   (mon== "8") || (mon== "10")) {
      if (day <= 30)  {   return 1; }    }
    else {
      if (mon == "1")   {
        if (((year % 4) == 0) && ((year % 100) != 0))  {
          if (day <= 29) {  return 1;  }
        }
        if ((year % 400) == 0) {
          if (day <= 29)   {  return 1;    }
        }
        if (day <= 28) {  return 1;    }
      } else {
        return 0;
      }
    }
  }
  return 0;
}

function checkStartDate(frm) {
  if (!isDateOptionChecked(frm, "7")) {
    return true;
  }
  var day = parseInt(frm.sd_D.options[frm.sd_D.selectedIndex].value);
  var mon = frm.sd_M.options[frm.sd_M.selectedIndex].value;
  var yea = parseInt(frm.sd_Y.options[frm.sd_Y.selectedIndex].value);
  var daynow = parseInt(frm.sd_DN.value);
  var monthnow = parseInt(frm.sd_MN.value);
  var yearnow = parseInt(frm.sd_YN.value);
  if (!compareDate(daynow, monthnow, yearnow, day, mon, yea, 1)) {
    frm.sd_D.focus();
    alert("Das angegebene Datum liegt in der Vergangenheit.");
    return false;
  }
  return true;
}
function doCheckFormeventsearch(frm) {
if(!checkMinChar(frm.rls)) { return false; }
if(!checkDatesd(frm)) { return false; }
if(!checkStartDate(frm)) { return false; }
if(!checkDateed(frm)) { return false; }
if(!checkDateRange(frm)) { return false; }

return true;
}

  function checkMinChar(entry) {
	 if (entry.value.length < 2) {
	 	alert("Zu kurz bitte 2 Zeichen eingeben.");
	 	entry.focus();
	 	return false;
	 }
	 return true;
  }

function isDateOptionChecked(frm, searchKey) {
  var max = frm.dr.length;
  for(i=0; i<max; i++) {
    if (frm.dr[i].value==searchKey) {
      if (frm.dr[i].checked) {
        return true;
      } else {
        return false;
      }
    }
  }
  return false;
}

function checkDateed(frm) {
  var day = parseInt(frm.ed_D.options[frm.ed_D.selectedIndex].value, 10);
  var mon = parseInt(frm.ed_M.options[frm.ed_M.selectedIndex].value, 10);
  var yea = parseInt(frm.ed_Y.options[frm.ed_Y.selectedIndex].value, 10);
  if (!validDate(day, mon, yea)) {
    frm.ed_D.focus();
    alert("Bitte wählen Sie ein gültiges Datum aus.");
    return false;
  }
  return true;
}

function compareDate(dayf, monthf, yearf, dayt, montht, yeart, equal) {
  if (parseInt(yeart) < parseInt(yearf)) {  return 0; }
  if (parseInt(yeart) > parseInt(yearf)) {  return 1; }
  if (parseInt(montht) < parseInt(monthf)) {  return 0; }
  if (parseInt(montht) > parseInt(monthf)) { return 1; }
  if (equal)   {
    if (parseInt(dayt) < parseInt(dayf))   {  return 0; }
	} else {
		if (parseInt(dayt) <= parseInt(dayf))   {  return 0; }
  }
  return 1;
}

function checkDatesd(frm) {
  var day = parseInt(frm.sd_D.options[frm.sd_D.selectedIndex].value, 10);
  var mon = parseInt(frm.sd_M.options[frm.sd_M.selectedIndex].value, 10);
  var yea = parseInt(frm.sd_Y.options[frm.sd_Y.selectedIndex].value, 10);
  if (!validDate(day, mon, yea)) {
    frm.sd_D.focus();
    alert("Bitte wählen Sie ein gültiges Datum aus.");
    return false;
  }
  return true;
}

function doOnLoad() {

return true;
}

function doOnUnLoad() {

return true;
}

function openExtLink(url,w,h) {
  ExtLinkWindow =  window.open(url, "Wnd1", "resizable=1,location=0,directories=0,status=1,menubar=0,scrollbars=1,toolbar=0,width="+w+",height="+h);
  ExtLinkWindow.focus();
}

function openNewWindow(url) {
   ExtLinkWindow =  window.open(url,"Extended", "resizable=1,location=1,directories=1,status=1,menubar=1,scrollbars=1,toolbar=1");
   ExtLinkWindow.focus();
}


  function createMapLink() {
    var mapUrl = "http://www.tiscover.com/drawmap";
    mapUrl = mapUrl + "&L1=wgs:" + jsGisXCoord + "," + jsGisYCoord + ";f:tiscover/target.gif";
    mapUrl = mapUrl  + "&AREACODE=at";
    mapUrl = mapUrl + "&_XgoStreetFitStyle=" + jsMapStyle;
    mapUrl = mapUrl + "&_XgoTabs=" + jsDisplayTheme;
    mapUrl = mapUrl + "&XgoPointWGS=" + jsGisCenterX + "," + jsGisCenterY;
    mapUrl = mapUrl + "&XgoScale=" + pScales[jsPScaleIdx];
    mapUrl = mapUrl + "&sizex=425&sizey=300";
    document.getElementById("gisMap").src = mapUrl;
  }
  
  function setPScale(pScaleIdx) {
    if(pScaleIdx==-2) { // zoomInzoomIn
      if(jsPScaleIdx==1) {
        return;
      }
      pScaleIdx = jsPScaleIdx - 1;
    }
    if(pScaleIdx==-1) { // zoomIn
      if(jsPScaleIdx==12) {
        return;
      }
      pScaleIdx = jsPScaleIdx + 1;
    }
    if(pScaleIdx==jsPScaleIdx) {
      return;
    }
    var i = 1;
    for(i=1;i<=12;i++) {
      if(i==pScaleIdx) {
        document.getElementById("zoom" + i).src = "http://www.tiscover.at/at/layoutimg/gisSelZoom" + i + ".gif";
      } else {
        document.getElementById("zoom" + i).src = "http://www.tiscover.at/at/layoutimg/gisZoom" + i + ".gif";
      }
    }
    if(pScaleIdx==1) {
      document.getElementById("zoomIn").src = "http://www.tiscover.at/at/layoutimg/gisZoomInDeactivated.gif";
    } else {
      document.getElementById("zoomIn").src = "http://www.tiscover.at/at/layoutimg/gisZoomIn.gif";
    }
    if(pScaleIdx==12) {
      document.getElementById("zoomOut").src = "http://www.tiscover.at/at/layoutimg/gisZoomOutDeactivated.gif";
    } else {
      document.getElementById("zoomOut").src = "http://www.tiscover.at/at/layoutimg/gisZoomOut.gif";
    }
    jsPScaleIdx = pScaleIdx;

    jsLongitudeDelta = defLongitudeDelta * pScales[defaultPScaleIdx] / pScales[jsPScaleIdx];
    jsLatitudeDelta = defLatitudeDelta * pScales[defaultPScaleIdx] / pScales[jsPScaleIdx];
    
    createMapLink();
  }
  
  function changeLongitude(direction) {
    var ER = 6371010;
    var ltDeg = jsLatitudeDelta * 180 / (ER * Math.PI) * 10000;
    var lgDeg = jsLongitudeDelta * 180 / (ER * Math.PI * Math.cos(jsGisCenterY / 10000 * Math.PI / 180)) * 10000;
    jsGisCenterX = jsGisCenterX + direction * lgDeg;
    createMapLink();  
  }

  function changeLatitude(direction) {
    var ER = 6371010;
    var ltDeg = jsLatitudeDelta * 180 / (ER * Math.PI) * 10000;
    var lgDeg = jsLongitudeDelta * 180 / (ER * Math.PI * Math.cos(jsGisCenterY / 10000 * Math.PI / 180)) * 10000;
    jsGisCenterY = jsGisCenterY + direction * ltDeg;
    createMapLink();  
  }

 var pScales = new Array (
    0,
    0.0005000000,
    0.0002000000,
    0.0001333333,
    0.0001000000,
    0.0000666667,
    0.0000400000,
    0.0000200000,
    0.0000066667,
    0.0000020000,
    0.0000010000,
    0.0000002500,
    0.0000000500
  );
  
 var mapStyles = new Array (
    "maporama",
    "maporama_en",
    "maporama_us",
    "maporama_de",
    "maporama_classicfr",
    "maporama_nl",
    "maporama_it",
    "maporama_es",
    "maporama_wap",
    "maporama_palm",
    "maporama_en_bis"    
  );
  
 var displayThemes = new Array (
    "basic",
    "default_car",
    "default_foot",
    "free_park",
    "none",
    "real_estate",
    "standard",
    "travel"
  );
  

  var jsGisXCoord = 154183.0;
  var jsGisYCoord = 483665.0;
  var jsDisplayTheme = "travel";
  var jsDisplayThemeIdx = 7;
  var jsMapStyle = "maporama_de";
  var jsMapStyleIdx = 3;
  var jsGisCenterX = 154183;
  var jsGisCenterY = 483665;
  var jsPScaleIdx = 4;
  var defLongitudeDelta = 200;
  var defLatitudeDelta = 200;
  var jsLongitudeDelta = defLongitudeDelta;
  var jsLatitudeDelta = defLatitudeDelta;
  var defaultPScaleIdx = 4;