,obj){
var class_name = $(obj).attr('class');
if(class_name == 'selected'){
class_status = false;
}
});
if(class_status){
$(".nav_main li a").eq(0).addClass('selected');
}
}
setTimeout('check_nav()',100);
function check_k(){
var k = $("#k").val();
if(k == ''){
return false;
}
return true;
}
