var inputs;
var option_selected = false;
var option_selected_nr = 0;

function replaceChecks() {
	inputs = document.getElementsByTagName('input');
	for (var i=0; i < inputs.length; i++) {
		if (inputs[i].getAttribute('type') == 'radio') {
			var img = document.createElement('img');
			if (inputs[i].selected) {
				if (option_selected == false) {
					img.src = imgTrueRadio;
					option_selected = true;
					option_selected_nr = i;
				} else {
					img.src = imgFalseRadio;
				}
			} else {
				img.src = imgFalseRadio;
			}
			img.id = 'checkImage'+i;
			img.onclick = new Function('checkChange('+i+')');
			inputs[i].parentNode.insertBefore(img, inputs[i]);
			inputs[i].style.display='none';
		}
		else if (inputs[i].getAttribute('type') == 'checkbox') {
			var img = document.createElement('img');
			if(inputs[i].checked) {
				img.src = imgTrueCheckbox;
			} else {
				img.src = imgFalseCheckbox;
			}
			img.id = 'checkImage'+i;
			img.onclick = new Function('checkChange('+i+')');
			inputs[i].parentNode.insertBefore(img, inputs[i]);
			inputs[i].style.display = 'none';
		}
	}
}

function checkChange(i) {
	if (inputs[i].getAttribute('type') == 'radio') {
		if (option_selected) {
			document.getElementById('checkImage'+option_selected_nr).src=imgFalseRadio;
		}
		inputs[i].checked = 'checked';
		document.getElementById('checkImage'+i).src=imgTrueRadio;
		option_selected = true;
		option_selected_nr = i;
	} else if (inputs[i].getAttribute('type') == 'checkbox') {
		if (inputs[i].checked) {
			inputs[i].checked = '';
			document.getElementById('checkImage'+i).src=imgFalseCheckbox;
			if (inputs[i].id == 'toall') document.getElementById('sv').innerHTML = 'Laiškas bus siunčiamas visiems';
		} else {
			inputs[i].checked = 'checked';
			document.getElementById('checkImage'+i).src=imgTrueCheckbox;
			if (inputs[i].id == 'toall') document.getElementById('sv').innerHTML = 'Laiškas bus siunčiamas tik pasirinkusiem gauti laiškus';
		}
	}
}