function findBrowser() {
	var browser; 
	if (navigator.appName == 'Netscape' && document.layers != null) {
		browser = "ns";
	} else if (document.all != null) {
		browser = "ie"
	} else if (navigator.appName == 'Netscape' && document.layers == null && navigator.appVersion.substring(0,1) > 4) {
		browser = "ns6";
	} 
	return browser;
}

function getRef(id) {
	if (findBrowser() == "ns") {
		return document.layers[id];
	} else if (findBrowser() == "ie") {
		return document.all[id];
	} else if (findBrowser() == "ns6") {
		return document.getElementById(id);
	}
}

function changeColor(id,color) {
	if (findBrowser() == "ns") {
		getRef(id).bgcolor = color;
	}
	else if (findBrowser() == "ie" || findBrowser() == "ns6") {
		getRef(id).style.backgroundColor = color;
	}	
}

function changeClass(id,newClass) {
	getRef(id).className = newClass;
}

function changeImage(id,imageUrl) {
	document.images[id].src = imageUrl;
}

function hideLayer(id) {
	if (findBrowser() == "ns") {
		if (getRef(id).visibility == "show") {
			getRef(id).visibility = "hide";
		}
	}
	else if (findBrowser() == "ie" || findBrowser() == "ns6") {
		if (getRef(id).style.visibility == "visible") {
			getRef(id).style.visibility = "hidden";			
		}
	}		
}

function showLayer(id) {
	if (id) {
		if (findBrowser() == "ns") {
			if (getRef(id).visibility == "hide") {
				getRef(id).visibility = "show";
			}
		}
		else if (findBrowser() == "ie" || findBrowser() == "ns6") {
			if (getRef(id).style.visibility == "hidden") {
				getRef(id).style.visibility = "visible";			
			}
		}
	}
}

function changeLocation(mmId,smId,sideId) {
	document.location.href = "index.asp?mainmenuid="+mmId+"&submenuid="+smId+"&sideid="+sideId;
}

function openWindow(URL) {
	window.open(URL);
}

function openBestemmelser() {
	bestemmelserWindow = window.open('bestemmelser.asp', 'bestemmelser', 'toolbar=no,status=no,width=600,height=500,scrollbars=yes');
	bestemmelserWindow.focus();
}

function openHund(id,anchorid) {
	hundWindow = window.open('hunddata.asp?id='+id+'#resultat'+anchorid, 'hund', 'toolbar=no,status=no,width=600,height=500,scrollbars=yes');
	hundWindow.focus();
}

var activeMmLayerId = "";

function changeMenuColor(layerId, newColor) {
	if (layerId != "mainmenu" + activeMmLayerId) {
		changeColor(layerId, newColor);
	}
}

function changemenu(id) {
	var layerId = "mainmenu" + id;
	var submenuLayerId = "submenuLayer" + id;
	var menuPilLayer = "mainmenulayerArrow" + id;
	if (id == activeMmLayerId) { 
		newState = 'none'; //hide
		newMenuPil = "<img src='images/menu_arrow_close.gif' width='4' height='7'>";
		activeMmLayerId = "";
	} else { 
		if (activeMmLayerId != "") { //fjern den undermenu som vises nu
			var tempLayerId = "mainmenu" + activeMmLayerId;
			var tempMenuPilLayer = "mainmenulayerArrow" + activeMmLayerId;
			var tempSubmenuLayerId = "submenuLayer" + activeMmLayerId;
			changeColor(tempLayerId,'');
			getRef(tempMenuPilLayer).innerHTML = "<img src='images/menu_arrow_close.gif' width='4' height='7'>";
			if (document.all) { //IS IE 4 or 5 (or 6 beta) 
				eval( "document.all." + tempSubmenuLayerId + ".style.display = 'none'"); 
			} 
			if (document.layers) { //IS NETSCAPE 4 or below 
				document.layers[tempSubmenuLayerId].display = 'none'; 
			} 
			if (document.getElementById &&!document.all) { 
				hza = document.getElementById(tempSubmenuLayerId); 
				hza.style.display = 'none'; 
			}
		}
		newState = 'block'; //show		
		activeMmLayerId = id;
		newMenuPil = "<img src='images/menu_arrow_open.gif' width='7' height='4'>";
	} 
	if (document.all) { //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + submenuLayerId + ".style.display = newState"); 
	} 
	if (document.layers) { //IS NETSCAPE 4 or below 
		document.layers[submenuLayerId].display = newState; 
	} 
	if (document.getElementById &&!document.all) { 
		hza = document.getElementById(submenuLayerId); 
		hza.style.display = newState; 
	}
	getRef(menuPilLayer).innerHTML = newMenuPil;
}

function showhide(layer_ref, link_ref) { 
	var state = "";
	
	if (document.all) { //IS IE 4 or 5 (or 6 beta) 
		state = getRef(layer_ref).style.display;
	} 
	
	if (document.layers) { //IS NETSCAPE 4 or below 
		state = document.layers[layer_ref].display; 
	} 
	
	if (document.getElementById &&!document.all) { 
		hza = document.getElementById(layer_ref); 
		state = hza.style.display; 
	}
	
	if (state == 'block') { 
		state = 'none'; 
		link_html = "<a href='#' onclick=showhide('"+layer_ref+"','"+link_ref+"');>vis</a>";
	} else { 
		state = 'block'; 
		link_html = "<a href='#' onclick=showhide('"+layer_ref+"','"+link_ref+"');>skjul</a>";
	} 
	
	if (document.all) { //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + layer_ref + ".style.display = state");
		eval( "document.all." + link_ref + ".innerHTML = link_html"); 
	} 
	
	if (document.layers) { //IS NETSCAPE 4 or below 
		document.layers[layer_ref].display = state; 
		document.layers[link_ref].innerHTML = link_html; 
	} 
	
	if (document.getElementById &&!document.all) { 
		hza = document.getElementById(layer_ref); 
		hza.style.display = state; 
		document.getElementById(link_ref).innerHTML = link_html;
	} 
}


function checkEmail(str) {

	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   //alert("Invalid E-mail ID")
	   return false
	}
	
	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   //alert("Invalid E-mail ID")
	   return false
	}
	
	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		//alert("Invalid E-mail ID")
		return false
	}
	
	 if (str.indexOf(at,(lat+1))!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.indexOf(dot,(lat+2))==-1){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		//alert("Invalid E-mail ID")
		return false
	 }
	
	 return true					
}