function show_menu_about() {
var one = document.getElementById("about"); 
var two = document.getElementById("menu_bar");

val=one.innerHTML;	
two.innerHTML=val;	
}




function show_menu_services()
{
var one = document.getElementById("services"); 
var two = document.getElementById("menu_bar");

val=one.innerHTML;	
two.innerHTML=val;	
}

function show_menu_approach()
{
var one = document.getElementById("approach"); 
var two = document.getElementById("menu_bar");

val=one.innerHTML;	
two.innerHTML=val;		
}

function show_menu_infocenter()
{
var one = document.getElementById("infocenter"); 
var two = document.getElementById("menu_bar");
val=one.innerHTML;	
two.innerHTML=val;	
}

////////////


function show_menu_about_back()
{
var one = document.getElementById("default"); 
var two = document.getElementById("menu_bar");
	
	
val=one.innerHTML;	
two.innerHTML=val;	
}

function show_menu_services_back()
{
var one = document.getElementById("default"); 
var two = document.getElementById("menu_bar");

val=one.innerHTML;	
two.innerHTML=val;	
}

function show_menu_approach_back()
{
var one = document.getElementById("default"); 
var two = document.getElementById("menu_bar");

val=one.innerHTML;	
two.innerHTML=val;		
}

function show_menu_infocenter_back()
{
var one = document.getElementById("default"); 
var two = document.getElementById("menu_bar");
val=one.innerHTML;	
two.innerHTML=val;	
}





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