function zmenCSS(x) {
	document.styleSheets[0].disabled = (x!='c');
	document.styleSheets[1].disabled = (x!='b');
	document.styleSheets[2].disabled = (x!='a');
}


function mm(jmeno, dom){
	location.href = '\x6D\x61\x69\x6c\x74\x6f\x3a' + jmeno + '@'+ dom;
}

function hand(obj) {
	var dec= obj.style.textDecoration;
	obj.style.cursor="pointer";
}

function trim(arg)
{
	arg=arg.replace(/^[\s]+/g,"");
	arg=arg.replace(/[\s]+$/g,"");
	return arg;
}

function validate(f) {
	if (trim(f.kontakt.value)=="") {
		alert("Vyplňte kontakt na Vás.");
		f.kontakt.focus();
		return false;
	}
	else if(f.vzkaz.value=="") {
		alert("Do vzkazu musíte něco napsat.");
		f.vzkaz.focus();
		return false;
	}
	else return true;
}

//nastavení cest pro lightbox
var fileLoadingImage = "./cizi_kody/lightbox/images/loading.gif";
var fileBottomNavCloseImage = "./cizi_kody/lightbox/images/closelabel.gif";

function add(dok,data)
{
	dok.form.odp.value += " "+data;
}