var btn_client = new Image();
var btn_client_mo = new Image();

btn_client.src = 'images/btn_client.gif';
btn_client_mo.src = 'images/btn_client_mo.gif';

var btn_company = new Image();
var btn_company_mo = new Image();

btn_company.src = 'images/btn_company.gif';
btn_company_mo.src = 'images/btn_company_mo.gif';

var btn_contact = new Image();
var btn_contact_mo = new Image();

btn_contact.src = 'images/btn_contact.gif';
btn_contact_mo.src = 'images/btn_contact_mo.gif';

var btn_faq = new Image();
var btn_faq_mo = new Image();

btn_faq.src = 'images/btn_faq.gif';
btn_faq_mo.src = 'images/btn_faq_mo.gif';

var btn_home = new Image();
var btn_home_mo = new Image();

btn_home.src = 'images/btn_home.gif';
btn_home_mo.src = 'images/btn_home_mo.gif';

var btn_market = new Image();
var btn_market_mo = new Image();

btn_market.src = 'images/btn_market.gif';
btn_market_mo.src = 'images/btn_market_mo.gif';

var btn_resource = new Image();
var btn_resource_mo = new Image();

btn_resource.src = 'images/btn_resource.gif';
btn_resource_mo.src = 'images/btn_resource_mo.gif';

var btn_team = new Image();
var btn_team_mo = new Image();

btn_team.src = 'images/btn_team.gif';
btn_team_mo.src = 'images/btn_team_mo.gif';

var btn_techn = new Image();
var btn_techn_mo = new Image();

btn_techn.src = 'images/btn_techn.gif';
btn_techn_mo.src = 'images/btn_techn_mo.gif';

function btnMo(button) {

	var mo = eval('btn_' + button + '_mo').src;
	document.images[button].src = mo;

}

function btnOut(button) {

	var out = eval('btn_' + button).src;
	document.images[button].src = out;
	
}