function goto(x){

	// show or hide the frontpage media links
	if(x==0){
		document.getElementById('BBC').style.visibility='visible';
		document.getElementById('WesternMail').style.visibility='visible';
		if(document.getElementById('Video')){document.getElementById('Video').style.visibility='visible';}
		if(document.getElementById('BBCSound')){document.getElementById('BBCSound').style.visibility='visible';}
		if(document.getElementById('Tony-7-150')){document.getElementById('Tony-7-150').style.visibility='visible';}
		if(document.getElementById('Tony-8-400')){document.getElementById('Tony-8-400').style.visibility='visible';}
	}else{
		document.getElementById('BBC').style.visibility='hidden';
		document.getElementById('WesternMail').style.visibility='hidden';
		if(document.getElementById('Video')){document.getElementById('Video').style.visibility='hidden';}
		if(document.getElementById('BBCSound')){document.getElementById('BBCSound').style.visibility='hidden';}
		if(document.getElementById('Tony-7-150')){document.getElementById('Tony-7-150').style.visibility='hidden';}
		if(document.getElementById('Tony-8-400')){document.getElementById('Tony-8-400').style.visibility='hidden';}
	}
	
	// show or hide the candidate login form
	if(x==4){
		document.getElementById('LOGIN').style.visibility='visible';
	}else{
		document.getElementById('LOGIN').style.visibility='hidden';
	}
	
	// show or hide the clients link
	if(x==5){
		document.getElementById('CLIENTSLINK').style.visibility='visible';
	}else{
		document.getElementById('CLIENTSLINK').style.visibility='hidden';
	}

	// reset all menu images
	for(i=0;i<7;i++){
		menuImage="MENU"+i;
		document.getElementById(menuImage).src=images[i].src;
	}
	
	// set new menu 'on' image
	selectedMenu="MENU"+x;
	document.getElementById(selectedMenu).src=imagesOn[x].src;
	
	// set new picture image
	document.getElementById('PICTURE').src=picture[x].src;
	
	// set new main image
	document.getElementById('MAIN').src=main[x].src;
}