function sys_onsubmit(){
	
     if(login_form.id_user.value =="") {
		alert("You User");
		login_form.id_user.focus();
		return false;
	} 
	 
	 
	 if(login_form.pw_user.value =="") {
		alert("You Pass");
		login_form.pw_user.focus();
		return false;
	}
	
	else {	
		
	}	
}