function valid_email(form) {
	email = form.email.value;
	if ((email.indexOf('@') < 0) || ((email.charAt(email.length-4) != '.') && (email.charAt(email.length-3) != '.'))) {
		alert("Ievadītā e-pasta adrese ir nepareiza! Mēģiniet vēlreiz");
		form.email.focus();
		return (false);
	}
	else {
		return (true);
	}
}

function hide(elem) {
	document.getElementById(elem).style.visibility = "hidden";
}
function show(elem) {
	document.getElementById(elem).style.visibility = "visible";
}		

function newWin(url, w, h) {
	l = (screen.availWidth-10 - w) / 2;
	t = (screen.availHeight-20 - h) / 2;
	
	features = "width="+w+",height="+h+",left="+l+",top="+t;
	features += ",screenX="+l+",screenY="+t;
	features += ",scrollbars=1,resizable=0,location=0";
	features += ",menubar=0,toolbar=0,status=0";
	
	window.open(url, null, features);
}

function valid_theme(form) {
	if (form.f_title.value == '') {
		alert("Tēmas nosaukums ir obligāts");
		form.f_title.focus();
		return (false);
	}
	else if (form.f_name.value == '') {
		alert("Vārds ir obligāts");
		form.f_name.focus();
		return (false);
	}
	else if (form.f_comment.value == '') {
		alert("Ieraksti komentāru");
		form.f_comment.focus();
		return (false);
	}
	else {
		return (true);
	}
}

function valid_comment(form) {
	if (form.f_name.value == '') {
		alert("Vārds ir obligāts");
		form.f_name.focus();
		return (false);
	}
	else if (form.f_comment.value == '') {
		alert("Ieraksti komentāru");
		form.f_comment.focus();
		return (false);
	}
	else {
		return (true);
	}
}