function isEmpty(idx) {
   var obj = document.getElementById(idx);
   if(obj.value == '') {
      alert("De obligatoriska fälten markerade med (*) är inte ifyllda.   \nVänligen fyll i de obligatoriska fälten.");
      return true;
   }
   return false;
}

function agentCheck()
{
if(!document.getElementById || !document.createElement)
    return(false);
var b=navigator.userAgent.toLowerCase();
if(b.indexOf("msie 5")>0 && b.indexOf("opera")==-1)
    return(false);
return(true);
}

function Rounded(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
var l=v.length;
for(i=0;i<l;i++){
    AddTop(v[i],bk,color,size);
    AddBottom(v[i],bk,color,size);
    }
}

function RoundedTop(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
for(i=0;i<v.length;i++)
    AddTop(v[i],bk,color,size);
}

function RoundedBottom(selector,bk,color,size){
var i;
var v=getElementsBySelector(selector);
for(i=0;i<v.length;i++)
    AddBottom(v[i],bk,color,size);
}

function AddTop(el,bk,color,size){
var i;
var d=document.createElement("b");
var cn="r";
var lim=4;
if(size && size=="small"){ cn="rs"; lim=2}
d.className="rtop";
d.style.backgroundColor=bk;
for(i=1;i<=lim;i++){
    var x=document.createElement("b");
    x.className=cn + i;
    x.style.backgroundColor=color;
    d.appendChild(x);
    }
el.insertBefore(d,el.firstChild);
}

function AddBottom(el,bk,color,size){
var i;
var d=document.createElement("b");
var cn="r";
var lim=4;
if(size && size=="small"){ cn="rs"; lim=2}
d.className="rbottom";
d.style.backgroundColor=bk;
for(i=lim;i>0;i--){
    var x=document.createElement("b");
    x.className=cn + i;
    x.style.backgroundColor=color;
    d.appendChild(x);
    }
el.appendChild(d,el.firstChild);
}

function getElementsBySelector(selector){
var i;
var s=[];
var selid="";
var selclass="";
var tag=selector;
var objlist=[];
if(selector.indexOf(" ")>0){  //descendant selector like "tag#id tag"
    s=selector.split(" ");
    var fs=s[0].split("#");
    if(fs.length==1) return(objlist);
    return(document.getElementById(fs[1]).getElementsByTagName(s[1]));
    }
if(selector.indexOf("#")>0){ //id selector like "tag#id"
    s=selector.split("#");
    tag=s[0];
    selid=s[1];
    }
if(selid!=""){
    objlist.push(document.getElementById(selid));
    return(objlist);
    }
if(selector.indexOf(".")>0){  //class selector like "tag.class"
    s=selector.split(".");
    tag=s[0];
    selclass=s[1];
    }
var v=document.getElementsByTagName(tag);  // tag selector like "tag"
if(selclass=="")
    return(v);
for(i=0;i<v.length;i++){
    if(v[i].className==selclass){
        objlist.push(v[i]);
        }
    }
return(objlist);
}


// Ajax!
// =====

function retrieveURL(url, elementId) {
	var xmlHttp = GetXmlHttpObject(); 
	if (xmlHttp==null) {
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	xmlHttp.onreadystatechange=function() {
		if (xmlHttp.readyState == 4) { // Complete
			if (xmlHttp.status == 200) { // OK response
			if(elementId != '')
				document.getElementById(elementId).innerHTML = xmlHttp.responseText;
			//else
			//	alert('Response: ' + xmlHttp.responseText);
			} else {
				alert("Problem: " + xmlHttp.statusText);
			}
		}
	}
	if(url.lastIndexOf('?') > 0)
		url = url + "&dummy=" + new Date().getTime();
	else
		url = url + "?dummy=" + new Date().getTime();
	
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function GetXmlHttpObject() {
	var xmlHttp=null;
	try {
		// If IE7, Mozilla, Safari, etc: Use native object
		xmlHttp=new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer < 7
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}


function setCookie(name, value, expiredays, path, domain, secure) {
	var expires=new Date();
	expires.setDate(expires.getDate()+expiredays);
	var curCookie = name + "=" + escape(value) +
		((expires) ? "; expires=" + expires.toGMTString() : "") +
		((path) ? "; path=" + path : "") +
		((domain) ? "; domain=" + domain : "") +
		((secure) ? "; secure" : "");
	document.cookie = curCookie;
}


function urlencode(str) {
	str = escape(str);
	str = str.replace('+', '%2B');
	str = str.replace('%20', '+');
	str = str.replace('*', '%2A');
	str = str.replace('/', '%2F');
	str = str.replace('@', '%40');
	return str;
}

function urldecode(str) {
	str = str.replace('+', ' ');
	str = unescape(str);
	return str;
}

function showHide(id) {
	if(document.getElementById(id).style.display == 'none')
		document.getElementById(id).style.display = 'block';
	else
		document.getElementById(id).style.display = 'none';
}