var _currentTabId = "";

function initTabSystem(page, browser) {
	// No page given. Set default to home (i.e. page without active tab)
	if (!page) {
		page = "home";
	}
	if (page != "home" && page != "agenda" && page != "sponsors" && page != "speakers" && page != "companies" && page != "information") {
		return false;
	}

	// Init color of subnavigation container
	initSubnaviContainer(page);

	// Set tab extension visibility
	showTabExtension(page);
	return true;
}

function showTabExtension(page)
{

	// Show current tab
	var parentBox = document.getElementById("tab_extension_" + page);
	parentBox.style.display = "block";

	// Update current tab
	_currentTabId = "tab_extension_" + page;
}

function initSubnaviContainer(page)
{

	if (page == "agenda") {
		document.getElementById("subnavi_box").style.backgroundColor = "#ACC0C6";
	}
	else if (page == "home") {
		document.getElementById("subnavi_box").style.backgroundColor = "#c0c0c0";
	}
	else if (page == "sponsors") {
		document.getElementById("subnavi_box").style.backgroundColor = "#CCCFB9";
	}
	else if (page == "speakers") {
		document.getElementById("subnavi_box").style.backgroundColor = "#EDC08B";
	}
	else if (page == "companies") {
		document.getElementById("subnavi_box").style.backgroundColor = "#BDB1A6";
	}
	else if (page == "information") {
		document.getElementById("subnavi_box").style.backgroundColor = "#C6A693";
	}
}

function tabMouseOver(tabId)
{

	// Hide current tab
	if (_currentTabId != "")
	document.getElementById(_currentTabId).style.display = "none";

	// Show new tab on mouse over
	showTab(tabId);
}

function tabMouseOut(tabId)
{

	// Hide tab on mouse out
	hideTab(tabId);

	// Show current tab
	if (_currentTabId != "")
	document.getElementById(_currentTabId).style.display = "block";
}

function showTab(tabId)
{
	if (tabId == "tab_naviitem_4") {
		document.getElementById("tab_extension_agenda").style.display = "block";
	}
	else if	(tabId == "tab_naviitem_5") {
		document.getElementById("tab_extension_sponsors").style.display = "block";
	}
	else if	(tabId == "tab_naviitem_6") {
		document.getElementById("tab_extension_speakers").style.display = "block";
	}
	else if	(tabId == "tab_naviitem_7") {
		document.getElementById("tab_extension_companies").style.display = "block";
	}
	else if	(tabId == "tab_naviitem_8") {
		document.getElementById("tab_extension_information").style.display = "block";
	}
}

function hideTab(tabId)
{
	if (tabId == "tab_naviitem_4") {
		document.getElementById("tab_extension_agenda").style.display = "none";
	}
	else if	(tabId == "tab_naviitem_3") {
		document.getElementById("tab_extension_home").style.display = "none";
	}
	else if	(tabId == "tab_naviitem_5") {
		document.getElementById("tab_extension_sponsors").style.display = "none";
	}
	else if	(tabId == "tab_naviitem_6") {
		document.getElementById("tab_extension_speakers").style.display = "none";
	}
	else if	(tabId == "tab_naviitem_7") {
		document.getElementById("tab_extension_companies").style.display = "none";
	}
	else if	(tabId == "tab_naviitem_8") {
		document.getElementById("tab_extension_information").style.display = "none";
	}
}

function switch_amex ( )
{
	document.getElementById("spn_currency").innerHTML = "CHF";
	document.getElementById("hidden_currency").value = "CHF";
	document.getElementById("tx_registration_pi1[amount]").value = "2080";
	document.getElementById("hidden_amount").value = "2080";
}

function switch_no_amex ( )
{
	document.getElementById("spn_currency").innerHTML = "€";
	document.getElementById("hidden_currency").value = "EUR";
	document.getElementById("tx_registration_pi1[amount]").value = "1450";
	document.getElementById("hidden_amount").value = "1450";	
}

function init_page3( )
{
	if( document.getElementById("paymentmethod_visa").checked
	   || document.getElementById("paymentmethod_master").checked ){
		switch_no_amex();
	}else{
		switch_amex();
	}
}