$(document).ready( function() {
	// lightbox
	$('a[rel*=lightbox]').lightBox();
	
	// external links in new window
	$('a[rel*=external]').bind('click', function(){
		window.open($(this).attr('href'));
		return false;
	});
});

function formCheck(f, txtEmpty, txtInvalid) { // 1.1
	var err='', elem='';
	for(i=3, len=arguments.length; i<len; i++) {
		elem=f[arguments[i][0]];
		if(elem.nodeName) { // select, input, textarea
			if(arguments[i][2] || !arguments[i][3]) {
				if((typeof(elem.selectedIndex) != 'undefined' && !elem.selectedIndex) || (typeof(elem.selectedIndex) == 'undefined' && elem.value == '')) err+=txtEmpty +' : '+ arguments[i][1] +"\n";
			} 
			if(arguments[i][3] && (arguments[i][2] || elem.value) && !checkFormat(elem.value, arguments[i][3])) err+=txtInvalid +' : '+ arguments[i][1] +"\n";
		} else if(elem[0]['type'] == 'checkbox') { // chbox
			for(x=0, len2=elem.length, ch=false; x<len2; x++) {
				if(elem[x]['checked']) { ch=true; break; }
			}
			if(!ch) err+=txtEmpty +' : '+ arguments[i][1] +"\n";
		}
	}
	if(err) alert(err);
	return (err ? false : true);
}

function checkFormat(val, type) { // 1.0
	switch(type) {
		case 'email': if(val.match(/^[^@]+@.+\.[a-z]+$/)) return true; break;
		case 'isint': if(val.match(/^\d+$/)) return true; break;
		case 'isnum': if(val.match(/^\d+[.]?\d*$/)) return true; break;
		case 'date_cz': if(val.match(/^(3[01]|[0-2]*\d|)\.([0]*\d|1[0-2])\.\d{4}$/)) return true; break; // DD.MM.YYYY nebo D.M.YYYY
		case 'date_iso': if(val.match(/^\d{4}-(0\d|1[0-2])-(3[01]|[0-2]\d)$/)) return true; break; // YYYY-MM-DD
		case 'phone_cz': val=val.replace(/ /g, ''); if(val.match(/^\d{9,12}$/)) return true; break;
	}
	return false;
}

// CMS
function menu_onoff(item)
{
    with (document.getElementById(item).style) {
        display = ((display == "none") ? "block" : "none");
        return true;
    }
    return false;
}

// onBlur="emailCheck(this, lang('Zadejte platný email!'));
// @require eregCheck
function emailCheck(field, alert_string)
{
    if (alert_string == "") { alert_string = "Zadejte e-mail."; }
	return eregCheck(alert_string, field, /^[^ @]+@[^ @]+\.[^ @]+$/);
}

function eregCheck(alert_string, field, regexp)
{
	if (field.value == '' || regexp.test(field.value)) {
		return true;
	} else {
        field.focus();
        alert(alert_string);
        return false;
    }
}

// return ulozitCheck(this.form, lang('Nejsou zadány povinné údaje, formulář nelze odeslat!'), 'col1', 'col2');
function ulozitCheck(f)
{
    if (arguments[1] == "") {
        alert_string = "Nejsou zadány povinné údaje,\n formulář nelze odeslat!";
    } else {
        alert_string = arguments[1];
    }
    for (i=2; i<arguments.length; i++) {
        if ((f[arguments[i]].tagName == 'SELECT' && !f[arguments[i]].selectedIndex) || !f[arguments[i]].value) {
            f[arguments[i]].focus();
            window.alert(alert_string);
            return false;
        }
    }
    return true;
}