var	btn_welcome = new Image();
var	btn_welcome_o = new Image();
var btn_about = new Image();
var btn_about_o = new Image();
var btn_1031 = new Image();
var btn_1031_o = new Image();
var	btn_property_posting = new Image();
var	btn_property_posting_o = new Image();
var	btn_open_exchange = new Image();
var	btn_open_exchange_o = new Image();
var	btn_contact = new Image();
var	btn_contact_o = new Image();
var	btn_upcoming_events = new Image();
var	btn_upcoming_events_o = new Image();

function changeImages(par)
{
	if(document.images && preloadFlag == true)
	{
		if(par == "btn_welcome")document.btn_welcome.src = btn_welcome.src;
		if(par == "btn_welcome_o")document.btn_welcome.src = btn_welcome_o.src;
		if(par == "btn_about") document.btn_about.src = btn_about.src;
		if(par == "btn_about_o") document.btn_about.src = btn_about_o.src;
		if(par == "btn_1031") document.btn_1031.src = btn_1031.src;
		if(par == "btn_1031_o") document.btn_1031.src = btn_1031_o.src;
		if(par == "btn_property_posting") document.btn_property_posting.src = btn_property_posting.src;
		if(par == "btn_property_posting_o") document.btn_property_posting.src = btn_property_posting_o.src;
		if(par == "btn_open_exchange") document.btn_open_exchange.src = btn_open_exchange.src;
		if(par == "btn_open_exchange_o") document.btn_open_exchange.src = btn_open_exchange_o.src;
		if(par == "btn_contact") document.btn_contact.src = btn_contact.src;
		if(par == "btn_contact_o") document.btn_contact.src = btn_contact_o.src;
		if(par == "btn_upcoming_events") document.btn_upcoming_events.src = btn_upcoming_events.src;
		if(par == "btn_upcoming_events_o") document.btn_upcoming_events.src = btn_upcoming_events_o.src;
	}
}

var preloadFlag = false;
function preloadImages()
{
	if (document.images)
	{
		btn_welcome.src = "images/btn_wlcm.gif"
		btn_welcome_o.src = "images/btn_wlcm_o.gif"
		btn_about.src = "images/btn_about.gif"
		btn_about_o.src = "images/btn_about_o.gif"
		btn_1031.src = "images/btn_1031.gif"
		btn_1031_o.src = "images/btn_1031_o.gif"
		btn_property_posting.src = "images/btn_property_posting.gif"
		btn_property_posting_o.src = "images/btn_property_posting_o.gif"
		btn_open_exchange.src = "images/btn_open_exchange.gif"
		btn_open_exchange_o.src = "images/btn_open_exchange_o.gif"
		btn_contact.src = "images/btn_contact.gif"
		btn_contact_o.src = "images/btn_contact_o.gif"
		btn_upcoming_events.src = "images/btn_upcoming_events.gif"
		btn_upcoming_events_o.src = "images/btn_upcoming_events_o.gif"
	}
	preloadFlag = true;
}