function companytab()
{
	document.getElementById('mn_company').style.background = "url(i/bg_mainnav_company_new.jpg) -102px top no-repeat";
}
function companytaboff()
{
	document.getElementById('mn_company').style.background = "url(i/bg_mainnav_company_new.jpg) left top no-repeat";
}


function marketstab()
{
	document.getElementById('mn_markets').style.background = "url(i/bg_mainnav_markets_new.jpg) -93px top no-repeat";
}
function marketstaboff()
{
	document.getElementById('mn_markets').style.background = "url(i/bg_mainnav_markets_new.jpg) left top no-repeat";
}


function productstab()
{
	document.getElementById('mn_products').style.background = "url(i/bg_mainnav_products_new.jpg) -158px top no-repeat";
}
function productstaboff()
{
	document.getElementById('mn_products').style.background = "url(i/bg_mainnav_products_new.jpg) left top no-repeat";
}


function newstab()
{
	document.getElementById('mn_news').style.background = "url(i/bg_mainnav_news_new.jpg) -131px top no-repeat";
}
function newstaboff()
{
	document.getElementById('mn_news').style.background = "url(i/bg_mainnav_news_new.jpg) left top no-repeat";
}


function contacttab()
{
	document.getElementById('mn_contact').style.background = "url(i/bg_mainnav_contact_new.jpg) -94px top no-repeat";
}
function contacttaboff()
{
	document.getElementById('mn_contact').style.background = "url(i/bg_mainnav_contact_new.jpg) left top no-repeat";
}