browserName = navigator.appName;
        browserVer = parseInt(navigator.appVersion);

        ns4 = (browserName == "Netscape" && browserVer == 4);

        buttonPlusDark=new Image; buttonPlusDark.src="knappar/plusdark.gif";
        buttonPlusLjus=new Image; buttonPlusLjus.src="knappar/plusljus.gif" ;

        buttonPlusDark2=new Image; buttonPlusDark2.src="../knappar/plusdark.gif";
        buttonPlusLjus2=new Image; buttonPlusLjus2.src="../knappar/plusljus.gif" ;

        buttonMinusDark=new Image; buttonMinusDark.src="knappar/minusdark.gif" ;
        buttonMinusLjus=new Image; buttonMinusLjus.src="knappar/minusljus.gif"  ;

        buttonIntroDark=new Image; buttonIntroDark.src="knappar/introdark.gif" ;
        buttonIntroLjus=new Image; buttonIntroLjus.src="knappar/introljus.gif" ;

        buttonPilFramDark=new Image; buttonPilFramDark.src="knappar/pilframdark.gif"  ;
        buttonPilFramLjus=new Image; buttonPilFramLjus.src="knappar/pilframljus.gif" ;
        
        buttonPilFramDark2=new Image; buttonPilFramDark2.src="../knappar/pilframdark.gif"  ;
        buttonPilFramLjus2=new Image; buttonPilFramLjus2.src="../knappar/pilframljus.gif" ;

        buttonPilBakDark=new Image; buttonPilBakDark.src="knappar/pilbakdark.gif";
        buttonPilBakLjus=new Image; buttonPilBakLjus.src="knappar/pilbakljus.gif" ;
        
        buttonPilBakDark2=new Image; buttonPilBakDark2.src="../knappar/pilbakdark.gif";
        buttonPilBakLjus2=new Image; buttonPilBakLjus2.src="../knappar/pilbakljus.gif" ;

        buttonBeginLq=new Image; buttonBeginLq.src="knappar/beginlqtour.gif";
        buttonBeginLqLjus=new Image; buttonBeginLqLjus.src="knappar/beginlqtourljus.gif" ;
        
        buttonBeginT=new Image; buttonBeginT.src="knappar/begintour.gif";
        buttonBeginTLjus=new Image; buttonBeginTLjus.src="knappar/begintourljus.gif" ;

        buttonBeginMq=new Image; buttonBeginMq.src="knappar/beginmqtour.gif";
        buttonBeginMqLjus=new Image; buttonBeginMqLjus.src="knappar/beginmqtourljus.gif" ;

        buttonNext=new Image; buttonNext.src="knappar/nextdark.gif";
        buttonNextLjus=new Image; buttonNextLjus.src="knappar/nextljus.gif" ;

        buttonPrev=new Image; buttonPrev.src="knappar/prevdark.gif";
        buttonPrevLjus=new Image; buttonPrevLjus.src="knappar/prevljus.gif" ;
        
        buttonGo=new Image; buttonGo.src="knappar/godark.gif";
        buttonGoLjus=new Image; buttonGoLjus.src="knappar/goljus.gif" ;
        
        buttonPlusPlus=new Image; buttonPlusPlus.src="knappar/plusplusdark.gif";
        buttonPlusPlusLjus=new Image; buttonPlusPlusLjus.src="knappar/plusplusljus.gif" ;

        buttonFamtree=new Image; buttonFamtree.src="../knappar/famtreedark.gif";
        buttonFamtreeLjus=new Image; buttonFamtreeLjus.src="../knappar/famtreeljus.gif" ;
        
        buttonFamtree2=new Image; buttonFamtree2.src="../knappar/famtreedark2.gif";
        buttonFamtreeLjus2=new Image; buttonFamtreeLjus2.src="../knappar/famtreeljus2.gif" ;
        
        buttonFamtree3=new Image; buttonFamtree3.src="knappar/famtreedark.gif";
        buttonFamtreeLjus3=new Image; buttonFamtreeLjus3.src="knappar/famtreeljus.gif" ;
        
        buttonQues=new Image; buttonQues.src="../knappar/quesdark.gif";
        buttonQuesLjus=new Image; buttonQuesLjus.src="../knappar/quesljus.gif" ;
        
        buttonQues2=new Image; buttonQues2.src="trees/knappar/quesdark.gif";
        buttonQuesLjus2=new Image; buttonQuesLjus2.src="trees/knappar/quesljus.gif" ;
        
        buttonBack=new Image; buttonBack.src="../knappar/backdark.gif";
        buttonBackLjus=new Image; buttonBackLjus.src="../knappar/backljus.gif" ;
        
        buttonBack3=new Image; buttonBack3.src="../knappar/backdark2.gif";
        buttonBackLjus3=new Image; buttonBackLjus3.src="../knappar/backljus2.gif" ;
        
        buttonBack4=new Image; buttonBack4.src="sv/knappar/backdark.gif";
        buttonBackLjus4=new Image; buttonBackLjus4.src="sv/knappar/backljus.gif" ;
        
        buttonBack5=new Image; buttonBack5.src="en/knappar/backdark2.gif";
        buttonBackLjus5=new Image; buttonBackLjus5.src="en/knappar/backljus2.gif" ;
        
        buttonMain=new Image; buttonMain.src="knappar/maindark.gif";
        buttonMainLjus=new Image; buttonMainLjus.src="knappar/mainljus.gif" ;
        
        buttonMain2=new Image; buttonMain2.src="../knappar/maindark2.gif";
        buttonMainLjus2=new Image; buttonMainLjus2.src="../knappar/mainljus2.gif" ;
        
        buttonMain2=new Image; buttonMain2.src="../knappar/maindark.gif";
        buttonMainLjus2=new Image; buttonMainLjus2.src="../knappar/mainljus.gif" ;
        
         buttonMain3=new Image; buttonMain3.src="../knappar/maindark2.gif";
        buttonMainLjus3=new Image; buttonMainLjus3.src="../knappar/mainljus2.gif" ;


        function MouseOver(Buttonname)

        {
        if (!ns4)
            {
            if (Buttonname=="ButtonPlus")
                {document.ButtonPlus.src= buttonPlusLjus.src;}
                
            if (Buttonname=="ButtonPlus2")
                {document.ButtonPlus2.src= buttonPlusLjus2.src;}

            if (Buttonname=="ButtonMinus")
                {document.ButtonMinus.src= buttonMinusLjus.src;}

            if (Buttonname=="ButtonIntro")
                {document.ButtonIntro.src= buttonIntroLjus.src;}

            if (Buttonname=="ButtonPilFram")
                {document.ButtonPilFram.src= buttonPilFramLjus.src;}

            if (Buttonname=="ButtonPilBak")
                {document.ButtonPilBak.src= buttonPilBakLjus.src;}
                
            if (Buttonname=="ButtonPilFram2")
                {document.ButtonPilFram2.src= buttonPilFramLjus2.src;}

            if (Buttonname=="ButtonPilBak2")
                {document.ButtonPilBak2.src= buttonPilBakLjus2.src;}

            if (Buttonname=="ButtonBeginLq")
                {document.ButtonBeginLq.src= buttonBeginLqLjus.src;}
                
            if (Buttonname=="ButtonBeginT")
                {document.ButtonBeginT.src= buttonBeginTLjus.src;}

            if (Buttonname=="ButtonBeginMq")
                {document.ButtonBeginMq.src= buttonBeginMqLjus.src;}

            if (Buttonname=="ButtonNext")
                {document.ButtonNext.src= buttonNextLjus.src;}

            if (Buttonname=="ButtonPrev")
                {document.ButtonPrev.src= buttonPrevLjus.src;}
        
            if (Buttonname=="ButtonGo1")
                {document.ButtonGo1.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo2")
                {document.ButtonGo2.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo3")
                {document.ButtonGo3.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo4")
                {document.ButtonGo4.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo5")
                {document.ButtonGo5.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo6")
                {document.ButtonGo6.src= buttonGoLjus.src;}
        
            if (Buttonname=="ButtonGo8")
                {document.ButtonGo8.src= buttonGoLjus.src;}

            if (Buttonname=="ButtonGo9")
                {document.ButtonGo9.src= buttonGoLjus.src;}

            if (Buttonname=="ButtonGo10")
                {document.ButtonGo10.src= buttonGoLjus.src;}

            if (Buttonname=="ButtonGo7")
                {document.ButtonGo7.src= buttonGoLjus.src;}

            if (Buttonname=="ButtonGo11")
                {document.ButtonGo11.src= buttonGoLjus.src;}

            if (Buttonname=="ButtonGo12")
                {document.ButtonGo12.src= buttonGoLjus.src;}
                
            if (Buttonname=="ButtonPlusPlus")
                {document.ButtonPlusPlus.src= buttonPlusPlusLjus.src;}
                
            if (Buttonname=="buttonFamtree3")
                {document.buttonFamtree3.src= buttonFamtreeLjus3.src;}
                
            if (Buttonname=="buttonFamtree4")
                {document.buttonFamtree4.src= buttonFamtreeLjus3.src;}

            if (Buttonname=="ButtonFamtree10")
                {document.ButtonFamtree10.src= buttonFamtreeLjus.src;}
                
            if (Buttonname=="ButtonFamtree11")
                {document.ButtonFamtree11.src= buttonFamtreeLjus.src;}
                
            if (Buttonname=="ButtonFamtree12")
                {document.ButtonFamtree12.src= buttonFamtreeLjus.src;}
                
            if (Buttonname=="ButtonFamtree13")
                {document.ButtonFamtree13.src= buttonFamtreeLjus2.src;}
                
            if (Buttonname=="ButtonFamtree14")
                {document.ButtonFamtree14.src= buttonFamtreeLjus2.src;}
                
            if (Buttonname=="ButtonFamtree15")
                {document.ButtonFamtree15.src= buttonFamtreeLjus2.src;}
                
            if (Buttonname=="buttonQues")
                {document.buttonQues.src= buttonQuesLjus.src;}
                
            if (Buttonname=="buttonQues2")
                {document.buttonQues2.src= buttonQuesLjus2.src;}
                
            if (Buttonname=="buttonQues3")
                {document.buttonQues3.src= buttonQuesLjus2.src;}
                
             if (Buttonname=="ButtonBack")
                {document.ButtonBack.src= buttonBackLjus.src;}
                
             if (Buttonname=="ButtonBack2")
                {document.ButtonBack2.src= buttonBackLjus.src;}
                
             if (Buttonname=="buttonBack3")
                {document.buttonBack3.src= buttonBackLjus3.src;}
                
             if (Buttonname=="buttonBack4")
                {document.buttonBack4.src= buttonBackLjus4.src;}
                
             if (Buttonname=="buttonBack5")
                {document.buttonBack5.src= buttonBackLjus5.src;}
                
             if (Buttonname=="buttonMain")
                {document.buttonMain.src= buttonMainLjus.src;}
                
             if (Buttonname=="buttonMain2")
                {document.buttonMain2.src= buttonMainLjus.src;}
                
             if (Buttonname=="buttonMain3")
                {document.buttonMain3.src= buttonMainLjus.src;}
                
             if (Buttonname=="buttonMain4")
                {document.buttonMain4.src= buttonMainLjus.src;}
                
             if (Buttonname=="buttonMain5")
                {document.buttonMain5.src= buttonMainLjus.src;}
                
             if (Buttonname=="buttonMain6")
                {document.buttonMain6.src= buttonMainLjus.src;}
                
              if (Buttonname=="buttonMain7")
                {document.buttonMain7.src= buttonMainLjus2.src;}
                
              if (Buttonname=="buttonMain8")
                {document.buttonMain8.src= buttonMainLjus3.src;}
                
            }
        }


        function MouseOut(Buttonname)

        {
        if (!ns4)
            {
            if (Buttonname=="ButtonPlus")
                {document.ButtonPlus.src= buttonPlusDark.src;}
                
            if (Buttonname=="ButtonPlus2")
                {document.ButtonPlus2.src= buttonPlusDark2.src;}

            if (Buttonname=="ButtonMinus")
                {document.ButtonMinus.src= buttonMinusDark.src;}

            if (Buttonname=="ButtonIntro")
                {document.ButtonIntro.src= buttonIntroDark.src;}

            if (Buttonname=="ButtonPilFram")
                {document.ButtonPilFram.src= buttonPilFramDark.src;}

            if (Buttonname=="ButtonPilBak")
                {document.ButtonPilBak.src= buttonPilBakDark.src;}
                
            if (Buttonname=="ButtonPilFram2")
                {document.ButtonPilFram2.src= buttonPilFramDark2.src;}

            if (Buttonname=="ButtonPilBak2")
                {document.ButtonPilBak2.src= buttonPilBakDark2.src;}

            if (Buttonname=="ButtonBeginLq")
                {document.ButtonBeginLq.src= buttonBeginLq.src;}
                
            if (Buttonname=="ButtonBeginT")
                {document.ButtonBeginT.src= buttonBeginT.src;}

            if (Buttonname=="ButtonBeginMq")
                {document.ButtonBeginMq.src= buttonBeginMq.src;}
                
            if (Buttonname=="ButtonNext")
                {document.ButtonNext.src= buttonNext.src;}

            if (Buttonname=="ButtonPrev")
                {document.ButtonPrev.src= buttonPrev.src;}
                
            if (Buttonname=="ButtonGo1")
                {document.ButtonGo1.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo2")
                {document.ButtonGo2.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo3")
                {document.ButtonGo3.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo4")
                {document.ButtonGo4.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo5")
                {document.ButtonGo5.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo6")
                {document.ButtonGo6.src= buttonGo.src;}
        
            if (Buttonname=="ButtonGo7")
                {document.ButtonGo7.src= buttonGo.src;}

            if (Buttonname=="ButtonGo8")
                {document.ButtonGo8.src= buttonGo.src;}

            if (Buttonname=="ButtonGo9")
                {document.ButtonGo9.src= buttonGo.src;}

            if (Buttonname=="ButtonGo10")
                {document.ButtonGo10.src= buttonGo.src;}

            if (Buttonname=="ButtonGo11")
                {document.ButtonGo11.src= buttonGo.src;}

            if (Buttonname=="ButtonGo12")
                {document.ButtonGo12.src= buttonGo.src;}
                
            if (Buttonname=="ButtonPlusPlus")
                {document.ButtonPlusPlus.src= buttonPlusPlus.src;}

            if (Buttonname=="buttonFamtree3")
                {document.buttonFamtree3.src= buttonFamtree3.src;}
                
            if (Buttonname=="buttonFamtree4")
                {document.buttonFamtree4.src= buttonFamtree3.src;}
                
            if (Buttonname=="ButtonFamtree10")
                {document.ButtonFamtree10.src= buttonFamtree.src;}
                
            if (Buttonname=="ButtonFamtree11")
                {document.ButtonFamtree11.src= buttonFamtree.src;}
                
            if (Buttonname=="ButtonFamtree12")
                {document.ButtonFamtree12.src= buttonFamtree.src;}

            if (Buttonname=="ButtonFamtree13")
                {document.ButtonFamtree13.src= buttonFamtree2.src;}
                
            if (Buttonname=="ButtonFamtree14")
                {document.ButtonFamtree14.src= buttonFamtree2.src;}
                
            if (Buttonname=="ButtonFamtree15")
                {document.ButtonFamtree15.src= buttonFamtree2.src;}

            if (Buttonname=="buttonQues")
                {document.buttonQues.src= buttonQues.src;}
                
             if (Buttonname=="buttonQues2")
                {document.buttonQues2.src= buttonQues2.src;}
                
              if (Buttonname=="buttonQues3")
                {document.buttonQues3.src= buttonQues2.src;}
                
            if (Buttonname=="ButtonBack")
                {document.ButtonBack.src= buttonBack.src;}
                
            if (Buttonname=="ButtonBack2")
                {document.ButtonBack2.src= buttonBack.src;}
                
            if (Buttonname=="buttonBack3")
                {document.buttonBack3.src= buttonBack3.src;}
                
            if (Buttonname=="buttonBack4")
                {document.buttonBack4.src= buttonBack4.src;}
                
             if (Buttonname=="buttonBack5")
                {document.buttonBack5.src= buttonBack5.src;}
                
             if (Buttonname=="buttonMain")
                {document.buttonMain.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain2")
                {document.buttonMain2.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain3")
                {document.buttonMain3.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain4")
                {document.buttonMain4.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain5")
                {document.buttonMain5.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain6")
                {document.buttonMain6.src= buttonMain.src;}
                
             if (Buttonname=="buttonMain7")
                {document.buttonMain7.src= buttonMain2.src;}
                
              if (Buttonname=="buttonMain8")
                {document.buttonMain8.src= buttonMain3.src;}

            }
        }