function setTab(n) {
	$(".tab").hide();
	for(i=1; i<=5; i++)  $("#m"+i).css("background", "url(http://www.harley-davidsonbeijing.com/templets/harley/images/tab"+i+"_off.gif) no-repeat");
	$("#m"+n).css("background", "url(http://www.harley-davidsonbeijing.com/templets/harley/images/tab"+n+"_on.gif) no-repeat");
	$("#content"+n).show();
}