Welcomenormal=new Image();
Welcomenormal.src="navigation/welcomenormal.jpg";
Welcomeup=new Image();
Welcomeup.src="navigation/welcomeup.jpg";
Privatenormal=new Image();
Privatenormal.src="navigation/privatenormal.jpg";
Privateup=new Image();
Privateup.src="navigation/privateup.jpg";

Tetrisnormal = new Image();
Tetrisnormal.src = "navigation/tetrisnormal.jpg";
Tetrisup = new Image();
Tetrisup.src = "navigation/tetrisup.jpg";
Reversinormal = new Image();
Reversinormal.src = "navigation/reversinormal.jpg";
Reversiup = new Image();
Reversiup.src = "navigation/reversiup.jpg";
Blackjacknormal=new Image();
Blackjacknormal.src="navigation/blackjacknormal.jpg";
Blackjackup=new Image();
Blackjackup.src="navigation/blackjackup.jpg";

Switzerlandnormal=new Image();
Switzerlandnormal.src="navigation/switzerlandnormal.jpg";
Switzerlandup=new Image();
Switzerlandup.src="navigation/switzerlandup.jpg";
Worldnormal=new Image();
Worldnormal.src="navigation/worldnormal.jpg";
Worldup=new Image();
Worldup.src="navigation/worldup.jpg";

Ditetnormal=new Image();
Ditetnormal.src="navigation/d-itetnormal.jpg";
Ditetup=new Image();
Ditetup.src="navigation/d-itetup.jpg";
Ethznormal=new Image();
Ethznormal.src="navigation/ethznormal.jpg";
Ethzup=new Image();
Ethzup.src="navigation/ethzup.jpg";
Exercisesnormal=new Image();
Exercisesnormal.src="navigation/exercisesnormal.jpg";
Exercisesup=new Image();
Exercisesup.src="navigation/exercisesup.jpg";
Morelinksnormal=new Image();
Morelinksnormal.src="navigation/morelinksnormal.jpg";
Morelinksup=new Image();
Morelinksup.src="navigation/morelinksup.jpg";

Searchnormal=new Image();
Searchnormal.src="navigation/searchnormal.jpg";
Searchup=new Image();
Searchup.src="navigation/searchup.jpg";
Financenormal=new Image();
Financenormal.src="navigation/financenormal.jpg";
Financeup=new Image();
Financeup.src="navigation/financeup.jpg";
Personalpagesnormal=new Image();
Personalpagesnormal.src="navigation/personalpagesnormal.jpg";
Personalpagesup=new Image();
Personalpagesup.src="navigation/personalpagesup.jpg";
Sportsnormal=new Image();
Sportsnormal.src="navigation/sportsnormal.jpg";
Sportsup=new Image();
Sportsup.src="navigation/sportsup.jpg";
Computernormal=new Image();
Computernormal.src="navigation/computernormal.jpg";
Computerup=new Image();
Computerup.src="navigation/computerup.jpg";

Newentrynormal=new Image();
Newentrynormal.src="navigation/newentrynormal.jpg";
Newentryup=new Image();
Newentryup.src="navigation/newentryup.jpg";
Viewentriesnormal=new Image();
Viewentriesnormal.src="navigation/viewentriesnormal.jpg";
Viewentriesup=new Image();
Viewentriesup.src="navigation/viewentriesup.jpg";

function makevisible(nav){
	if(nav==1){
                  if(document.getElementById)
   		 document.getElementById("Nav1").style.visibility = "visible";
 	}
	if(nav==2){
         	if(document.getElementById)
   		document.getElementById("Nav2").style.visibility = "visible";
	}
	if(nav==3){
		if(document.getElementById)
		document.getElementById("Nav3").style.visibility="visible";
	}
         if(nav==4){
                  if(document.getElementById)
   		 document.getElementById("Nav4").style.visibility = "visible";
 	}
	if(nav==5){
         	if(document.getElementById)
   		document.getElementById("Nav5").style.visibility = "visible";
	}
	if(nav==6){
		if(document.getElementById)
		document.getElementById("Nav6").style.visibility="visible";
	}
}
function hide(nav){
         if(nav==1){
         	if(document.getElementById)
   		document.getElementById("Nav1").style.visibility = "hidden";
	}
	if(nav==2){
         	if(document.getElementById)
   		document.getElementById("Nav2").style.visibility = "hidden";
	}
         if(nav==3){
         	if(document.getElementById)
   		document.getElementById("Nav3").style.visibility = "hidden";
	}
         if(nav==4){
         	if(document.getElementById)
   		document.getElementById("Nav4").style.visibility = "hidden";
	}
	if(nav==5){
         	if(document.getElementById)
   		document.getElementById("Nav5").style.visibility = "hidden";
	}
         if(nav==6){
         	if(document.getElementById)
   		document.getElementById("Nav6").style.visibility = "hidden";
	}
}
function makevisibleandchange(nav,Bildobjekt,nbr){
	if(nav==1){
                  if(document.getElementById)
   		 document.getElementById("Nav1").style.visibility = "visible";
 	}
	if(nav==2){
         	if(document.getElementById)
   		document.getElementById("Nav2").style.visibility = "visible";
	}
         if(nav==3){
         	if(document.getElementById)
   		document.getElementById("Nav3").style.visibility = "visible";
	}
	if(nav==4){
         	if(document.getElementById)
   		document.getElementById("Nav4").style.visibility = "visible";
	}
         if(nav==5){
         	if(document.getElementById)
   		document.getElementById("Nav5").style.visibility = "visible";
	}
         if(nav==6){
         	if(document.getElementById)
   		document.getElementById("Nav6").style.visibility = "visible";
	}
         window.document.images[nbr].src = Bildobjekt.src;
}
function hideandchange(nav,Bildobjekt,nbr){
         if(nav==1){
         	if(document.getElementById)
   		document.getElementById("Nav1").style.visibility = "hidden";
	}
	if(nav==2){
         	if(document.getElementById)
   		document.getElementById("Nav2").style.visibility = "hidden";
	}
         if(nav==3){
         	if(document.getElementById)
   		document.getElementById("Nav3").style.visibility = "hidden";
	}
         if(nav==4){
         	if(document.getElementById)
   		document.getElementById("Nav4").style.visibility = "hidden";
	}
	if(nav==5){
         	if(document.getElementById)
   		document.getElementById("Nav5").style.visibility = "hidden";
	}
         if(nav==6){
         	if(document.getElementById)
   		document.getElementById("Nav6").style.visibility = "hidden";
	}
	 window.document.images[nbr].src = Bildobjekt.src;
}