function changDiv(divName){
		if(divName=="download"){
			document.all.download.style.display="block";
			document.all.instructions.style.display="none";
			document.all.linking.style.display="none";
		}
		if(divName=="instructions"){
			document.all.download.style.display="none";
			document.all.instructions.style.display="block";
			document.all.linking.style.display="none";
		}
		
		if(divName=="linking"){
			document.all.download.style.display="none";
			document.all.instructions.style.display="none";
			document.all.linking.style.display="block";
		}
		
		
	}