// JavaScript Document
function hide_div(which){
	document.getElementById(which).style.display = 'none';
}

function show_div(which){
	document.getElementById(which).style.display = 'block';
}

function show_hide(which,which2){
	checkbox = document.getElementById(which).checked;
	if(checkbox == false){
			hide_div(which2);
	}
	else{
			show_div(which2);		
	}
}
function doNothing()
{
// do nothing
}
function showHideAll(){
	
	//this function is called when an error occurs
	
	//first show the final screen and hide the first
	show_div('dui1_2'); hide_div('dui1_1');
		
}