function is_filled(field,fieldname)
{
	var status = true;	
	if (field.value == "")
	{
		alert('Please fill the "' + fieldname +'" field.');
		field.focus();
		status = false;
	}
	return status;
}

function is_same(field,field2)
{
	var status = true;	
	if (field.value != field2.value)
	{
		alert('Passwords you entered are different. Please enter again.');
		field.focus();
		status = false;
	}
	return status;
}

function is_newpass(field,field2)
{
	var status = true;	
	if (((field.value != "") || (field2.value != "")) && (field.value != field2.value))
	{
		alert('Passwords you entered are different. Please enter again.');
		field.focus();
		status = false;
	}
	return status;
}

function validate_news(newsform)
{
	if (!is_filled(newsform.title,"Title"))
		return false;
	if (!is_filled(newsform.content,"Content"))
		return false;
	return true;
}

function validate_menu(menuform)
{
	if (!is_filled(menuform.title,"Title"))
		return false;
	if (!is_filled(menuform.content,"Content"))
		return false;
	return true;
}

function validate_cat(catform)
{
	if (!is_filled(catform.title,"Title"))
		return false;
	return true;
}

function validate_doc(docform)
{
	if (!is_filled(docform.title,"Title"))
		return false;
	if (!is_filled(docform.content,"Content"))
		return false;
	return true;
}

function validate_user(userform)
{
	if (!is_filled(userform.name,"Name"))
		return false;
	if (!is_filled(userform.surname,"Surname"))
		return false;
	if (!is_filled(userform.email,"E-Mail"))
		return false;
	if (!is_filled(userform.username,"Username"))
		return false;
	if (!is_filled(userform.password,"Password"))
		return false;
	if (!is_filled(userform.password2,"Password Again"))
		return false;
	if (!is_same(userform.password,userform.password2))
		return false;
	if (!is_filled(userform.status,"Status"))
		return false;
	if (!is_filled(userform.priority,"Priority"))
		return false;
	return true;
}

function validate_user2(userform)
{
	if (!is_filled(userform.name,"Name"))
		return false;
	if (!is_filled(userform.surname,"Surname"))
		return false;
	if (!is_filled(userform.email,"E-Mail"))
		return false;
	if (!is_filled(userform.username,"Username"))
		return false;
	if (!is_newpass(userform.password,userform.password2))
		return false;
	if (!is_filled(userform.status,"Status"))
		return false;
	if (!is_filled(userform.priority,"Priority"))
		return false;
	return true;
}

function validate_project(projectform)
{
	if (!is_filled(projectform.title,"Title"))
		return false;
	if (!is_filled(projectform.abs_eng,"English abstract"))
		return false;
	if (!is_filled(projectform.abs_tr,"Turkish abstract"))
		return false;				
	if (!is_filled(projectform.software,"System and software"))
		return false;
	if (!is_filled(projectform.ram,"Ram required"))
		return false;
	if (!is_filled(projectform.disk,"Disk required"))
		return false;
	if (!is_filled(projectform.no_one,"Project group"))
		return false;
	if (!is_filled(projectform.name_one,"Project group"))
		return false;
	if (!is_filled(projectform.address_one,"Project group"))
		return false;
	if (!is_filled(projectform.tel_one,"Project group"))
		return false;
	if (!is_filled(projectform.supervisor,"Supervisor"))
		return false;
	return true;
}

function validate_profile(userform)
{
	if (!is_filled(userform.name,"Name"))
		return false;
	if (!is_filled(userform.surname,"Surname"))
		return false;
	if (!is_filled(userform.email,"E-Mail"))
		return false;
	if (!is_filled(userform.username,"Username"))
		return false;
	if (!is_newpass(userform.password,userform.password2))
		return false;
	return true;
}

function confirm_delete()
{
var confirmation=confirm("Are you sure to delete?");
if (confirmation)
	return true ;
else
	return false ;
}