function PrepLinks(){
	AllNavA = document.getElementById('nav').getElementsByTagName('a') ;
	
	for(x=0;x<AllNavA.length;x++){
		
		AllNavA[x].onclick = SwapLinkClass ;
		
	}
}

function SwapLinkClass(){
	AllNavA = document.getElementById('nav').getElementsByTagName('a') ;
	
	for(x=0;x<AllNavA.length;x++){
		AllNavA[x].className = "default" ;
	}
	
	this.className = "current" ;
}