var browser;

//if explorer (4.x)
if (document.all) {
	 layerRef='document.all.'
	 styleRef='.style.'
	 changeMessages=".innerHTML=messages[num]"
	 closeit=""
	 browser=true
}

//else if netscape (4.x)
else if (document.layers) {
	 layerRef='document.layers.'
	 styleRef='.'
	 changeMessages='.document.write("<b>"+messages[num]+"</b>")'
	 closeit=".document.close()"
	 browser=true
} 

//------------------------------------------------------------------------

function mover(num){
        if(browser){
                eval(layerRef+'startingMsg'+changeMessages)
                eval(layerRef+'startingMsg'+closeit);
        }
}

//------------------------------------------------------------------------

function mout(num){
        if(browser){
                eval(layerRef+'startingMsg'+changeMessages);
                eval(layerRef+'startingMsg'+closeit);
        }
}

//------------------------------------------------------------------------

function swap(a,b) { 
      if(a[a.selectedIndex].value == 0) return; 
      ref = document.reg;
      ref.submit();
}

//------------------------------------------------------------------------

function CheckSize(ThisPic) {  
	if (ThisPic.width > 500) { 
		ThisPic.width = 500; 
	}
} 

//------------------------------------------------------------------------

function changepic1(){ 
      document.ad1.MyPic1.src=document.ad1.bild1.value; 
}

//------------------------------------------------------------------------

function changepic2(){ 
      document.ad2.MyPic2.src=document.ad2.bild2.value; 
}

//------------------------------------------------------------------------

function changepic3(){ 
      document.ad3.MyPic3.src=document.ad3.bild3.value; 
}

//------------------------------------------------------------------------

function Popup(URL,width,height){
	if (parseInt(navigator.appVersion) >= 3){
		if (navigator.appName == "Netscape" && parseInt(navigator.appVersion)<5){
			var tools = new Packages.java.awt.Toolkit.getDefaultToolkit();
			screen=tools.getScreenSize();
		}
		x = screen.width;
		y = screen.height;
	}
	window.open(URL,"dummy","top=" + parseInt(y/2-height/2-16) + ",left=" + parseInt(x/2-width/2-5) + ",width=" + width + ",height=" + height,"scrollbars=1,resizable=0");
}

//------------------------------------------------------------------------

function Bild1(){
	if (document.ad1.bild1.value==""){
		alert('Du glömde välja vilken bild du vill ladda upp!');
		return false;
	}
document.ad1.action = document.ad1.action + '&psize=' + document.ad1.MyPic1.width; 
}

//------------------------------------------------------------------------

function Bild2(){
	if (document.ad2.bild2.value==""){
		alert('Du glömde välja vilken bild du vill ladda upp!');
		return false;
	}
document.ad2.action = document.ad2.action + '&psize=' + document.ad2.MyPic2.width; 
}

//------------------------------------------------------------------------

function Bild3(){
	if (document.ad3.bild3.value==""){
		alert('Du glömde välja vilken bild du vill ladda upp!');
		return false;
	}
document.ad3.action = document.ad3.action + '&psize=' + document.ad3.MyPic3.width; 
}

//------------------------------------------------------------------------

function LoggaIn(){
	if (document.login.email.value==""){
		alert('Du glömde skriva din emailadress!');
		return false;
	}else if (document.login.losen.value==""){
		alert('Du glömde skriva ditt lösenord!');
		return false;
	}
}

//------------------------------------------------------------------------

function KatIn(){
	if (document.kat.kat.value==""){
		alert('Du glömde skriva kategorins namn!');
		return false;
	}
}

//------------------------------------------------------------------------

function Glomt(){
	if (document.forgot.email.value==""){
		alert('Du glömde skriva din emailadress!');
		return false;
	}
}

//------------------------------------------------------------------------

function TypIn(){
	if (document.typ.typ.value==""){
		alert('Du glömde skriva annonstypens namn!');
		return false;
	}
}

//------------------------------------------------------------------------

function MemIn(){
      if (document.reg.name.value==""){
            alert("Du måste skriva ditt namn!");
            return false;
      } else if (document.reg.email.value==""){
            alert("Du glömde skriva din email!");
            return false;
      } else if (document.reg.losen1.value.length < 4) {
            alert("Ditt lösenord måste vara mer än 3 tecken!")
            return false;
      } else if (document.reg.losen1.value != document.reg.losen2.value){
            alert("Lösenorden matschade inte, prova igen!")
            return false;
      } else if (document.reg.county.value=="0"){
            alert("Du glömde välja län!");
            return false;
      } else if (document.reg.city.value==0){
            alert("Du glömde välja stad!");
            return false;
      }
}

//------------------------------------------------------------------------

function MemChange(){
      if (document.reg.name.value==""){
            alert("Du måste skriva ditt namn!");
            return false;
      } else if (document.reg.county.value=="0"){
            alert("Du glömde välja län!");
            return false;
      } else if (document.reg.city.value==0){
            alert("Du glömde välja stad!");
            return false;
      }
}

//------------------------------------------------------------------------

function AdIn(){
      if (document.ad.typ.value==""){
            alert("Du glömde välja annonsstyp");
            return false;
      } else if (document.ad.kat.value==""){
            alert("Du glömde välja kategorin!");
            return false;
      } else if (document.ad.modell.value==""){
            alert("Du måste skriva modell!");
            return false;
      } else if (document.ad.annonstext.value==""){
            alert("Du glömde skriva info om mc´n!");
            return false;
      }
}

//-------------------------------------------------------------------------------

function numbersonly() {
if (event.keyCode < 48 || event.keyCode > 57) return false;
}