function doMenu() {
  if (location.href.match(/\/products\//)) {
    d=document.getElementById('main_products');
    d.src="/images/main/main_products_sel.jpg";
  }
  if (location.href.match(/\/company\//)) {
    d=document.getElementById('main_company');
    d.src="/images/main/main_company_sel.jpg";
  }
  if (location.href.match(/\/fun\//)){
    d=document.getElementById('main_fun');
    d.src="/images/main/main_fun_sel.jpg";
  }
  if (location.href.match(/\/support\//)) {
    d=document.getElementById('main_support');
    d.src="/images/main/main_support_sel.jpg";
  }
}

doMenu();