function area_view(no,total) {
		for(i=1 ; i<=total ; i++ ){
			obj = eval("mainarea" + i);
			obj2 = eval("mainarea_" + i);
			if(i==no) {
				obj.style.display = "block";
				obj2.style.display = "block";
			} else {
				obj.style.display = "none";
				obj2.style.display = "none";
			}
		}
	}