function mainfunc(menu, data1, data2, data3, data4, data5) {

	switch(menu){
		case "nav":
			$("#top_content_middle").html('<img src="/images/ajax-loader.gif">');
			if(data1==""){
					
				$.get("/index.php", { ajax: "", menu: "top_image_main" },
				   function(data){
					$("#top_image").html(data);
				   });
			}else{
				$("#top_image").html('<img src="/images/top_image_'+ data1 +'.png">');
			}
			
			$("#top_content_middle").load("/templates/templates/page_" + data1 + data2 + ".tpl");			
			mainfunc("clear_select");
			
			$("#nav_" + data1).addClass("selected");

		break;
		case "business_nav": 
			$("#top_content_middle").html('<img src="/images/ajax-loader.gif">');
			mainfunc("clear_select");
			
			$("#top_content_middle").load("/templates/templates/business_" + data1 + data2 + ".tpl");
			$("#business_" + data1).addClass("selected");
		break;
		case "clear_select" :
			//selected
			$("#nav_").removeClass();
			$("#nav_team").removeClass();
			$("#nav_career").removeClass();
			$("#nav_contact").removeClass();		

			$("#business_marketing").removeClass();
			$("#business_sourcing").removeClass();
			$("#business_it").removeClass();
			$("#business_investment").removeClass();	


			$(".selected","#updates").removeClass();
			$("div","#updates").addClass("regular");
		break;
		case "reset_lang":
			$("#lang_ja").removeClass();
			$("#lang_en").removeClass();
		break;
		case "update_nav":
			$(".selected","#updates").removeClass();
			$("div","#updates").addClass("regular");
			$("#top_content_middle").html('<img src="/images/ajax-loader.gif">');
			mainfunc("clear_select");
			
			$("#top_content_middle").load("/templates/templates/update_" + data1 + data2 + ".tpl");
			$(".regular","#update_" + data1).addClass("selected");
		break;		
	}

}