function doSection(obj) {
	if (document.getElementById(obj).style.display == 'none') {
		document.getElementById(obj).style.display = 'block';
	}
}
function undoSection(obj) {
	if (document.getElementById(obj).style.display == 'block') {
		document.getElementById(obj).style.display = 'none';
	}
}
function doSub(obj) {
	if (document.getElementById(obj).className == 'navdelatnosti') {
		document.getElementById(obj).className = 'navdelatnostiup';
	}
}
function undoSub(obj) {
	if (document.getElementById(obj).className == 'navdelatnostiup') {
		document.getElementById(obj).className = 'navdelatnosti';
	}
}
function printMe() {
    window.print();  
}
/*
var switchElements = new Array('subber');
var switchClasses = ['navdelatnostiup', 'navdelatnosti'];

function sS(el) {
    var elm = document.getElementById(el); 
    
    for(var i=0;i<switchElements.length;i++) {
        var el2 = document.getElementById(switchElements[i]);
        el2.className = switchClasses[1];
	}
    elm.className = switchClasses[0];
    return false;
}
*/
function validateEmail() {
	ret = true;
	validate = {
		letteraddress: /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|\w{3})$/
	}

	for (i in validate) {
		el      = document.getElementById(i);
		if (validate[i].test(el.value)) {
			
		} else {
            alert('Email address must be valid!');
			ret = false;
		}
	}

	return ret;
}
function validateContact() {
	ret = true;
	validate = {
		name: /.+/,
        email: /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*\.(\w{2}|\w{3})$/,
		message: /.+/
	}
    names = {
        name: 'Full name field must not me empty!',
        email: 'Email address must be valid!',
        message: 'Message field must not be empty!'
    }
	for (i in validate) {
		el      = document.getElementById(i);
		if (validate[i].test(el.value)) {

		} else {
			alert(names[i]);
			ret = false;
		}
	}

	return ret;
}