function worlds(wtype) {

	if (wtype=='services') {

		ShowHide('tabs_home1','none');
		ShowHide('tabs_home2','block');
		ShowHide('content_markets','none');

		Effect.Appear('content_services', { duration: 0.5 });

		document.getElementById("container_home").className = ("container_home_3col");
		document.getElementById("content_home").className = ("content_home_3col");
		document.getElementById("footer_home").className = ("footer_home_3col");

	}

	if (wtype=='markets') {

		ShowHide('tabs_home1','block');
		ShowHide('tabs_home2','none');
		ShowHide('content_services','none');

		Effect.Appear('content_markets', { duration: 0.5 });

		document.getElementById("container_home").className = ("container_home_4col");
		document.getElementById("content_home").className = ("content_home_4col");
		document.getElementById("footer_home").className = ("footer_home_4col");

	}

}