initTabBox = function(box){
	box.tabs = box.children("#tabs").children("div");
	box.tabs.filter(":eq(0)").addClass("selected");
	box.content_windows = box.children(".tab_content");
	box.content_windows.not(":eq(0)").hide().end();
}
showTab = function(box,selected_number){
	number = selected_number-1;
	box.tabs.filter(":eq("+number+")").addClass("selected");
	box.tabs.not(":eq("+number+")").removeClass("selected");
	box.content_windows.not(":eq("+number+")").hide().end();
	box.content_windows.filter(":eq("+number+")").show().end();
}