var browser = "other";
var wi = null;

function checkMailForm()
{

  var ok=0;
  
  if (document.forms.frmMailer.name.value == "") ok=1;
  if (document.forms.frmMailer.email.value == "") ok=1;
  if (document.forms.frmMailer.firma.value == "") ok=1;
  if (document.forms.frmMailer.telefon.value == "") ok=1;
  
  if (ok==1) {
    alert("Das Formular muss vollständig ausgefüllt werden ! Prüfen Sie das bitte.");
    return (false);
  }

  document.forms.frmMailer.submit();
}


function openGalleries(){
	var url = "http://www.ballonfahrten.de/html/galerie.php";
	openWindow(url, "galleries");
}

function openWindow(url, name, parameter){
	if (url == null) url = "";
	if (name == null) name ="jhdgdf";
	if (parameter == null) parameter = "width=600,height=400,left=100,top=100,scrollbars=yes";
	
	if (url == "") return;
	
	var wi = window.open(url, name, parameter);
}

function detectUserAgent(){
	var an = window.navigator.appName.toLowerCase();

	if (an == "microsoft internet explorer") browser = "msie";
	if (an == "konqueror") browser = "konqueror";
	if (an == "netscape"){
		if (window.navigator.appVersion.substring(0,1) > "4")
			browser = "mozilla";
		else
			browser = "netscape";
	}
	if (an == "opera") browser = "opera";		
}

function page_onload(){
	detectUserAgent();
	if (browser == "msie" || browser == "mozilla" || browser == "konqueror"){
	}
}

function page_onresize(){
	if (browser == "msie" || browser == "mozilla")
		setPageLayout();
}