var btn_home = new Image();
var btn_home_o = new Image();
var btn_equipment = new Image();
var btn_equipment_o = new Image();
var btn_videos = new Image();
var btn_videos_o = new Image();
var btn_support = new Image();
var btn_support_o = new Image();
var btn_company = new Image();
var btn_company_o = new Image();
var btn_contact_us = new Image();
var btn_contact_us_o = new Image();
var btn_site_search = new Image();
var btn_site_search_o = new Image();
function changeImages(par)
{
	if(document.images && preloadFlag == true)
	{
		if(par == "btn_home") document.btn_home.src = btn_home.src;
		if(par == "btn_home_o") document.btn_home.src = btn_home_o.src;
		if(par == "btn_equipment") document.btn_equipment.src = btn_equipment.src;
		if(par == "btn_equipment_o") document.btn_equipment.src = btn_equipment_o.src;
		if(par == "btn_videos") document.btn_videos.src = btn_videos.src;
		if(par == "btn_videos_o") document.btn_videos.src = btn_videos_o.src;
		if(par == "btn_support") document.btn_support.src = btn_support.src;
		if(par == "btn_support_o") document.btn_support.src = btn_support_o.src;
		if(par == "btn_company") document.btn_company.src = btn_company.src;
		if(par == "btn_company_o") document.btn_company.src = btn_company_o.src;
		if(par == "btn_contact_us") document.btn_contact_us.src = btn_contact_us.src;
		if(par == "btn_contact_us_o") document.btn_contact_us.src = btn_contact_us_o.src;
		if(par == "btn_site_search") document.btn_site_search.src = btn_site_search.src;
		if(par == "btn_site_search_o") document.btn_site_search.src = btn_site_search_o.src;

	}
}
var preloadFlag = false
function preloadImages()
{
	if (document.images)
	{
		btn_home.src = "images/btn_home.jpg";
		btn_home_o.src = "images/btn_home_o.jpg";
		btn_equipment.src = "images/btn_equipment.jpg";
		btn_equipment_o.src = "images/btn_equipment_o.jpg";
		btn_videos.src = "images/btn_videos.jpg";
		btn_videos_o.src = "images/btn_videos_o.jpg";
		btn_support.src = "images/btn_support.jpg";
		btn_support_o.src = "images/btn_support_o.jpg";
		btn_company.src = "images/btn_company.jpg";
		btn_company_o.src = "images/btn_company_o.jpg";
		btn_contact_us.src = "images/btn_contact_us.jpg";
		btn_contact_us_o.src = "images/btn_contact_us_o.jpg";
		btn_site_search.src = "images/btn_site_search.jpg";
		btn_site_search_o.src = "images/btn_site_search_o.jpg";

	}
	preloadFlag = true;
}