function is_e_mail(the_mail) {
	if (the_mail=='') return 0;
	var i = the_mail.indexOf("@");
	if (i<1) return 0;
	var end = the_mail.substring(i+1,the_mail.length);
	if (end.length < 4) return 0;
	if (end.indexOf(".")==-1) return 0;
	return 1;
}

function check_mail_list() {
	if (!is_e_mail(document.mailinglist_form.detail_101.value)) {
		alert('Netfangið er ógilt!');
		return false;
	}
}

function change_select(the_id) {
	for (i=0; i < document.ticket_search.event_date_drop_id.options.length; i++) {
		if (document.ticket_search.event_date_drop_id.options[i].value == the_id)
			document.ticket_search.event_date_drop_id.options[i].selected = true;
	}
}

function change_radio(the_id) {
	for (i=0; i < document.ticket_search.event_date_id.length; i++) {
		if (document.ticket_search.event_date_id[i].value == the_id)
			document.ticket_search.event_date_id[i].checked = true;
	}
}

function confirm(order) {
	document.confirm_form.order.value = order;
	document.confirm_form.submit();
}

function email_check(str)
{
	var at="@";
	var dot=".";
	var lat=str.indexOf(at);
	var lstr=str.length;
	var ldot=str.indexOf(dot);

	if (str.indexOf(at)==-1)
   		return false;

	else if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
	   	return false;

	else if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
	   	return false;

	else if (str.indexOf(at,(lat+1))!=-1)
	    	return false;

	else if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot)
	    	return false;

	else if (str.indexOf(dot,(lat+2))==-1)
	   	return false;

	else if (str.indexOf(" ")!=-1)
	    	return false;
	else
	 	return true;
}

function contact_validation( nLang )
{
	if( document.frmContact.tboName.value.length == 0 )
	{
		if( nLang == 0 )
		{
			alert("Nafn vantar!")
		}
		else if( nLang == 1 )
		{
			alert("Name missing!")
		}
		else if( nLang == 2 )
		{
			alert("Navn mangler!")
		}
		return 0;
	}
	if( document.frmContact.tboEmail.value.length == 0 )
	{
		if( nLang == 0 )
		{
			alert("Netfang vantar!")
		}
		else if( nLang == 1 )
		{
			alert("Email missing!")
		}
		else if( nLang == 2 )
		{
			alert("Email mangler!")
		}
		return 0;
	}
	else if( email_check(document.frmContact.tboEmail.value) == false )
	{
		if( nLang == 0 )
		{
			alert("Netfang er ekki á réttu formi!")
		}
		else if( nLang == 1 )
		{
			alert("Your email is invalid!")
		}
		else if( nLang == 2 )
		{
			alert("Dit email er forkert!")
		}
		return 0;
	}
	else if( document.frmContact.tboContent.value.length == 0 )
	{
		if( nLang == 0 )
		{
			alert("Fyrirspurn vantar!")
		}
		else if( nLang == 1 )
		{
			alert("Query missing!")
		}
		else if( nLang == 2 )
		{
			alert("Spørgsmål mangler!")
		}
		return 0;
	}
	else
	{
		document.frmContact.submit();
		return 1;
	}
}