var dom = document.getElementById?1:0;

function hiFormImg(btn) {
	if (!dom) return;
	var ns = document.getElementById(btn).src.replace(/_lo./,"_hi.");
	document.getElementById(btn).src = ns;
	return;
}

function loFormImg(btn) {
	if (!dom) return;
	var ns = document.getElementById(btn).src.replace(/_hi./,"_lo.");
	document.getElementById(btn).src = ns;
	return;
}

var Netscape, MSIE, Opera, Unknown;
var Win, Mac, Other;
var NetscapeVer, MSIEVer, OperaVer;

Netscape = navigator.appName == "Netscape";
MSIE = navigator.appName == "Microsoft Internet Explorer";
Opera = navigator.userAgent.indexOf("Opera") > -1;
Unknown = !(Netscape || MSIE || Opera);

Win = navigator.userAgent.indexOf("Win") > -1;
Mac = navigator.userAgent.indexOf("Mac") > -1;
Other = !(Win || Mac);

if(Netscape) NetscapeVer = parseFloat(navigator.appVersion);
else if(MSIE) {
	n = navigator.userAgent;
	MSIEVer = n.substr(n.indexOf("MSIE ")+("MSIE ").length, 4);
	MSIEVer = parseFloat(MSIEVer);
	if(Opera) {
		OperaVer = n.substr(n.indexOf("Opera ")+("Opera ").length, 4);
		OperaVer = parseFloat(OperaVer);
	}
}

function makeLink(TARGET,TOPIC) {
	var url = "http://www.tourismuspartner-niedersachsen.de"+TARGET;
	var title = "Tourismuspartner Niedersachsen - "+TOPIC;
  if(Opera) alert("Bitte benutzen Sie die Tastenkombination Ctrl+T um diese Seite zu bookmarken!");
  else if(Win && MSIE && MSIEVer >= 5) window.external.AddFavorite(url, title);
  else alert("Bitte benutzen Sie die Tastenkombination Ctrl+D um diese Seite zu bookmarken!");
}

function mail2friend(ID,TOPIC,DEVURL) {
	var query = DEVURL+"/mail2friend.php?id="+ID+"&topic="+TOPIC;
	upload_win = open('','mailtofriend','width=533,height=500,status=no,toolbar=no,menubar=no,resizable=no,scrollbars=no')
	upload_win.location.href = query;
	upload_win.focus()
}

var moz = (navigator.userAgent.toLowerCase().indexOf("gecko") > -1 || window.sidebar)?1:0;
var ns = navigator.userAgent.toLowerCase().indexOf("netscape/") > -1?1:0;

function hideselects() {
	if (dom && !ns) {
		if (!moz) sels = document.getElementsByTagName("SELECT");
		else sels = document.getElementsByTagName("OBJECT");
		for (var i = 0; i < sels.length; i++) {
			if (sels[i].id.indexOf('hide_') > -1) if (sels[i].style.visibility != "hidden") sels[i].style.visibility='hidden';
		}
	}
}

function showselects() {
	if (dom && !ns) {
		var sels;
		if (!moz) sels = document.getElementsByTagName("SELECT");
		else sels = document.getElementsByTagName("OBJECT");
		for (var i = 0; i < sels.length; i++) {
			if (sels[i].id.indexOf('hide_') > -1) if (sels[i].style.visibility != "visible") sels[i].style.visibility='visible';
		}
	}
}

function submitKooperationsplaner(value, formid) {
  if (value) {
    document.getElementById(formid).submit();
  }
}