var validationFuncs = {
	preveriCheckbox: function(elm) {
		if(document.getElementById('tech').checked || document.getElementById('news').checked || document.getElementById('usa').checked) {
			return true; 
		} else {
			return false;
		}
	},
	preveriCheckbox2: function(elm) {
		if(document.getElementById('tech2').checked || document.getElementById('news2').checked || document.getElementById('usa2').checked) {
			return true; 
		} else {
			return false;
		}
	}
}

function getFunc(func, elm) {
	if(func=='preveriCheckbox') { 	
		return validationFuncs.preveriCheckbox();
	}
	if(func=='preveriCheckbox2') { 	
		return validationFuncs.preveriCheckbox2();
	}

    if(func=='checkBox') {
		if(elm.id == "agreement") {
            return elm.checked;
        //only validate agreement chk box
        } else{
            return true;
        }
	}

    if(func=='dropdown') {
		if(elm.value == "null" || elm.value == "false") {
           return false;
        } else{
            return true;
        }
	}
}