function start(){
	$('#headerbottom a').animate({
		backgroundPosition:"-=1px 0"
		}, {duration:10, complete:function(){start()}});
}

$(document).ready(function() {
	$('#headerbottom a').css( {backgroundPosition: "0 0"} );

	$(".usedmachines").mouseenter(function () {
		if($("body").attr("id") != "usedmachines"){
			$("a.usedmachines:hover span").css("visibility","visible");
		}
		$("#submenu").stop(true,true).animate({opacity: 1}, 100).show("fast");
		$("#submenubg").stop(true,true).animate({opacity: 0.7}, 100).show("fast");
	});
	$(".usedmachines").mouseleave(function () {
		$("#submenu").stop(true,true).animate({opacity: 1}, 300).hide("fast");
		$("#submenubg").stop(true,true).animate({opacity: 0.7}, 300).hide("fast");
	 });
	$("#submenu ul").mouseenter(function(){
		$("#submenu").stop(true,true);
		$("#submenubg").stop(true,true);
	});
	$("#submenu ul").mouseleave(function(){
		$("#submenu").animate({opacity: 1}, 300).hide("fast");
		$("#submenubg").animate({opacity: 0.7}, 300).hide("fast");
	});

	start();
});